+=================================================================+
|             Sample Solution [Sudoku Solver - 1.2]               |
+=================================================================+
|                                                                 |
|       +-------------------------------------------------+       |
|       |     Author   : Pushpak Dagade                   |       |
|       |     Date     : 20 July 2011                     |       |
|       |     Email    : guanidene@gmail.com              |       |
|       |     Blog     : http://guanidene.blogspot.com    |       |
|       +-------------------------------------------------+       |
|                                                                 |
+=================================================================+

(This is the solution generated by Sudoku Solver 1.2 for the puzzle here -
http://www.mumbaimirror.com/index.aspx?page=article&sectid=2&contentid=20100820201008200227455947563886b
It is the toughest puzzle I have found yet.)

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . . . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 . | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

=========================
[Max Assumptions: 4]

Solving exactly...
(2,5) --> 5
(5,6) --> 3

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [1]
Saving puzzle...)

Assuming 5 in cell (6,2)
[Other can be 9]

Solving exactly...
(5,8) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
5 in (6,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (6,2)
[Other can be 5]

Solving exactly...
(8,1) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (6,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [1]

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2]
Saving puzzle...)

Assuming 5 in cell (6,2)
[Other can be 9]

(Entering into nested
assumption...)

Solving exactly...
(5,8) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (5,1)
[Other can be 9]

Solving exactly...
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,1)
[Other can be 2]

Solving exactly...
(8,2) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
5 in (6,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . . 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (6,2)
[Other can be 5]

(Entering into nested
assumption...)

Solving exactly...
(8,1) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (1,2)
[Other can be 4]

Solving exactly...
(4,2) --> 8
(5,3) --> 2
(8,2) --> 5
(9,2) --> 3
(2,2) --> 4
(5,1) --> 5
(2,9) --> 3
(3,6) --> 2
(3,1) --> 3
(4,9) --> 2
(5,4) --> 8
(6,9) --> 5
(6,1) --> 7
(7,5) --> 3
(9,8) --> 5
(4,3) --> 6
(4,5) --> 9
(3,3) --> 9
(4,4) --> 1
(4,8) --> 7
(2,3) --> 1
(9,3) --> 8
(1,1) --> 6
(7,3) --> 7
(3,9) --> 8
(6,7) --> 1
(8,9) --> 1
(9,9) --> 4
(1,9) --> 7
(9,4) --> 6
(9,5) --> 2
(3,4) --> 4
(3,8) --> 6
(8,4) --> 7
(8,5) --> 8
(9,1) --> 1
(1,6) --> 8
(2,4) --> 9
(7,1) --> 2
(7,7) --> 8
(1,8) --> 1
(1,7) --> 4
(2,6) --> 6
(5,8) --> 4
(5,7) --> 9
(6,5) --> 6
(7,6) --> 1
(8,7) --> 2
(6,6) --> 4

+-------+-------+-------+
| 6 2 5 | 3 . 8 | 4 1 7 |
| 8 4 1 | 9 5 6 | . 2 3 |
| 3 7 9 | 4 1 2 | 5 6 8 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | 9 4 6 |
| 7 9 3 | 2 6 4 | 1 8 5 |
+-------+-------+-------+
| 2 6 7 | 5 3 1 | 8 . 9 |
| 9 5 4 | 7 8 . | 2 3 1 |
| 1 3 8 | 6 2 9 | 7 5 4 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[2 in cell (1,2)]

Hence, defintely correct-
[4 in cell (1,2)]

Solving exactly...
(2,2) --> 3
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (3,1)
[Other can be 6]

Solving exactly...
(5,1) --> 5
(6,9) --> 5
(6,1) --> 7
(8,2) --> 5
(9,8) --> 5

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 2 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (3,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (3,1)
[Other can be 2]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 6 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (3,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (4,2)
[Other can be 8]

Solving exactly...
(5,1) --> 5
(5,3) --> 8
(5,7) --> 2
(6,9) --> 5
(6,1) --> 7
(8,2) --> 5
(9,8) --> 5
(4,3) --> 6
(9,2) --> 8

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 6 | . . 5 | 3 . . |
| 5 1 8 | . 7 3 | 2 . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (4,2)
[Other can be 2]

Solving exactly...
(5,3) --> 2
(5,1) --> 5
(4,9) --> 2
(5,4) --> 8
(6,9) --> 5
(6,1) --> 7
(8,2) --> 5
(9,8) --> 5
(4,3) --> 6
(4,5) --> 9
(9,2) --> 2
(3,3) --> 9
(4,4) --> 1
(4,8) --> 7
(2,3) --> 1
(9,3) --> 8
(7,3) --> 7
(3,6) --> 8
(6,7) --> 1
(3,1) --> 2
(1,1) --> 6
(1,5) --> 2
(1,6) --> 7
(2,9) --> 7
(8,4) --> 7

+-------+-------+-------+
| 6 4 5 | 3 2 7 | . . . |
| 8 3 1 | . 5 . | . 2 7 |
| 2 7 9 | . 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| 9 5 4 | 7 . . | . 3 . |
| . 2 8 | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . . 6 |
| . 9 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (5,1)
[Other can be 5]

Solving exactly...
(3,1) --> 6
(4,2) --> 8
(1,1) --> 1
(2,3) --> 9
(3,3) --> 2
(4,9) --> 2
(5,8) --> 5
(5,4) --> 8
(5,7) --> 9
(6,1) --> 5
(6,9) --> 7
(1,9) --> 8
(4,8) --> 1
(6,7) --> 4
(7,8) --> 4
(9,1) --> 3
(9,8) --> 6
(1,7) --> 6
(2,7) --> 1
(2,9) --> 4
(3,8) --> 9
(6,5) --> 6
(6,6) --> 1
(7,1) --> 7
(1,8) --> 7
(3,4) --> 4
(3,6) --> 8
(4,4) --> 9
(7,6) --> 2
(7,7) --> 8
(8,5) --> 8
(8,7) --> 2
(9,4) --> 1
(9,5) --> 4
(9,9) --> 5
(7,3) --> 1
(7,5) --> 3
(8,2) --> 5
(8,9) --> 1
(9,2) --> 2
(9,3) --> 8
(1,5) --> 2
(4,3) --> 6

+-------+-------+-------+
| 1 4 5 | 3 2 . | 6 7 8 |
| 8 3 9 | . 5 . | 1 2 4 |
| 6 7 2 | 4 1 8 | 5 9 3 |
+-------+-------+-------+
| 4 8 6 | 9 . 5 | 3 1 2 |
| 2 1 . | 8 7 3 | 9 5 6 |
| 5 9 3 | 2 6 1 | 4 8 7 |
+-------+-------+-------+
| 7 6 1 | 5 3 2 | 8 4 9 |
| 9 5 4 | . 8 . | 2 3 1 |
| 3 2 8 | 1 4 9 | 7 6 5 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[2 in cell (5,1)]

Hence, defintely correct-
[5 in cell (5,1)]

Solving exactly...
(6,9) --> 5
(6,1) --> 7
(8,2) --> 5
(9,8) --> 5

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (3,1)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 2 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (3,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 6 in cell (3,1)
[Other can be 2]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 6 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (3,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 2 in cell (4,2)
[Other can be 8]

Solving exactly...
(5,3) --> 8
(9,2) --> 8
(4,3) --> 6
(5,7) --> 2

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 6 | . . 5 | 3 . . |
| 5 1 8 | . 7 3 | 2 . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 8 in cell (4,2)
[Other can be 2]

Solving exactly...
(5,3) --> 2
(9,2) --> 2
(4,3) --> 6
(4,5) --> 9
(3,3) --> 9
(4,4) --> 1
(4,8) --> 7
(4,9) --> 2
(2,3) --> 1
(9,3) --> 8
(7,3) --> 7
(5,4) --> 8
(6,7) --> 1
(3,6) --> 8
(3,1) --> 2
(1,1) --> 6
(1,5) --> 2
(1,6) --> 7
(2,9) --> 7
(8,4) --> 7

+-------+-------+-------+
| 6 4 5 | 3 2 7 | . . . |
| 8 3 1 | . 5 . | . 2 7 |
| 2 7 9 | . 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| 9 5 4 | 7 . . | . 3 . |
| . 2 8 | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 2 in cell (5,3)
[Other can be 8]

Solving exactly...
(4,2) --> 8
(4,3) --> 6
(4,5) --> 9
(9,2) --> 2
(3,3) --> 9
(4,4) --> 1
(4,8) --> 7
(4,9) --> 2
(2,3) --> 1
(9,3) --> 8
(7,3) --> 7
(5,4) --> 8
(6,7) --> 1
(3,6) --> 8
(3,1) --> 2
(1,1) --> 6
(1,5) --> 2
(1,6) --> 7
(2,9) --> 7
(8,4) --> 7

+-------+-------+-------+
| 6 4 5 | 3 2 7 | . . . |
| 8 3 1 | . 5 . | . 2 7 |
| 2 7 9 | . 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| 9 5 4 | 7 . . | . 3 . |
| . 2 8 | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 8 in cell (5,3)
[Other can be 2]

Solving exactly...
(4,2) --> 2
(4,3) --> 6
(9,2) --> 8
(5,7) --> 2

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 6 | . . 5 | 3 . . |
| 5 1 8 | . 7 3 | 2 . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (5,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 4 in cell (5,8)
[Other can be 9]

Solving exactly...
(6,7) --> 1
(7,8) --> 1
(4,4) --> 1
(8,6) --> 1
(8,4) --> 7
(7,3) --> 7

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . 4 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 7 | 5 . . | . 1 9 |
| 9 5 4 | 7 . 1 | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (5,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 9 in cell (5,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . 9 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 4 in cell (6,5)
[Other can be 6]

Solving exactly...
(6,7) --> 1
(6,6) --> 6
(4,4) --> 1
(4,3) --> 6

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . 6 | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 4 6 | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (6,5)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 6 in cell (6,5)
[Other can be 4]

Solving exactly...
(4,3) --> 6
(9,4) --> 6
(8,7) --> 6
(2,6) --> 6

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 6 | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . 6 | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 6 . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | 6 3 . |
| . . . | 6 . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (6,5)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 1 in cell (6,7)
[Other can be 4]

Solving exactly...
(4,4) --> 1

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (6,7)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | . 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 4 in cell (6,7)
[Other can be 1]

Solving exactly...
(5,8) --> 9
(6,5) --> 6
(6,6) --> 1
(5,7) --> 2
(5,3) --> 8
(5,4) --> 4
(4,2) --> 2
(4,3) --> 6
(9,2) --> 8
(9,4) --> 6
(8,7) --> 6
(2,6) --> 6
(2,9) --> 4
(2,4) --> 7
(3,6) --> 4
(3,4) --> 8
(3,3) --> 9
(4,5) --> 8
(4,4) --> 9
(8,6) --> 7
(8,9) --> 8
(9,5) --> 4
(1,6) --> 2
(2,3) --> 1
(2,7) --> 9
(3,8) --> 6
(7,6) --> 8
(7,7) --> 1
(7,8) --> 4
(8,4) --> 1
(8,5) --> 2
(9,3) --> 2
(1,1) --> 6
(1,5) --> 9
(1,7) --> 8
(3,1) --> 2
(7,1) --> 3
(7,3) --> 7
(9,1) --> 1

+-------+-------+-------+
| 6 4 5 | 3 9 2 | 8 . . |
| 8 3 1 | 7 5 6 | 9 2 4 |
| 2 7 9 | 8 1 4 | 5 6 3 |
+-------+-------+-------+
| 4 2 6 | 9 8 5 | 3 . . |
| 5 1 8 | 4 7 3 | 2 9 6 |
| 7 9 3 | 2 6 1 | 4 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 . 8 | 1 4 9 |
| 9 5 4 | 1 2 7 | 6 3 8 |
| 1 8 2 | 6 4 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[4 in cell (6,7)]

Hence previous assumption
was correct -
[1 in cell (6,7)]
Revert to the its
solution puzzle.
(Good, I had saved it!
Saved my time!)

+-------+-------+-------+
| 6 4 5 | 3 9 2 | 8 . . |
| 8 3 1 | 7 5 6 | 9 2 4 |
| 2 7 9 | 8 1 4 | 5 6 3 |
+-------+-------+-------+
| 4 2 6 | 9 8 5 | 3 . . |
| 5 1 8 | 4 7 3 | 2 9 6 |
| 7 9 3 | 2 6 1 | 4 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 . 8 | 1 4 9 |
| 9 5 4 | 1 2 7 | 6 3 8 |
| 1 8 2 | 6 4 9 | 7 5 . |
+-------+-------+-------+

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (3,1)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 2 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (3,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 6 in cell (3,1)
[Other can be 2]

Solving exactly...

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| 6 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (3,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . . |
| 5 1 . | . 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 5 4 | . . . | . 3 . |
| . . . | . . 9 | 7 5 . |
+-------+-------+-------+

Assuming 2 in cell (4,2)
[Other can be 8]

Solving exactly...
(4,9) --> 7
(5,3) --> 8
(9,2) --> 8
(4,3) --> 6
(4,8) --> 9
(5,8) --> 4
(7,8) --> 1
(3,8) --> 6
(4,5) --> 8
(5,4) --> 9
(5,7) --> 2
(1,8) --> 7
(3,1) --> 2
(3,3) --> 9
(7,1) --> 3
(9,1) --> 1
(9,3) --> 2
(9,9) --> 4
(1,1) --> 6
(2,3) --> 1
(7,3) --> 7
(7,7) --> 8
(8,7) --> 6
(8,9) --> 2
(9,4) --> 6
(9,5) --> 3
(1,7) --> 9
(2,7) --> 4
(1,5) --> 2
(1,6) --> 8
(1,9) --> 1
(2,4) --> 7
(2,6) --> 6
(3,4) --> 4
(6,6) --> 4
(7,5) --> 4
(7,6) --> 2
(8,4) --> 8
(6,5) --> 6
(8,6) --> 1

+-------+-------+-------+
| 6 4 5 | 3 2 8 | 9 7 1 |
| 8 3 1 | 7 5 6 | 4 2 . |
| 2 7 9 | 4 1 . | 5 6 3 |
+-------+-------+-------+
| 4 2 6 | 1 8 5 | 3 9 7 |
| 5 1 8 | 9 7 3 | 2 4 6 |
| 7 9 3 | 2 6 4 | 1 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 4 2 | 8 1 9 |
| 9 5 4 | 8 . 1 | 6 3 2 |
| 1 8 2 | 6 3 9 | 7 5 4 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[2 in cell (4,2)]

Hence, defintely correct-
[8 in cell (4,2)]

Solving exactly...
(5,3) --> 2
(9,2) --> 2
(4,3) --> 6
(4,5) --> 9
(4,8) --> 7
(4,9) --> 2
(3,3) --> 9
(2,3) --> 1
(9,3) --> 8
(7,3) --> 7
(5,4) --> 8
(3,6) --> 8
(3,1) --> 2
(1,1) --> 6
(1,5) --> 2
(1,6) --> 7
(2,9) --> 7
(8,4) --> 7

+-------+-------+-------+
| 6 4 5 | 3 2 7 | . . . |
| 8 3 1 | . 5 . | . 2 7 |
| 2 7 9 | . 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | . . 6 |
| 7 9 3 | 2 . . | 1 8 5 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| 9 5 4 | 7 . . | . 3 . |
| . 2 8 | . . 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 8 in cell (1,7)
[Other can be 9]

Solving exactly...
(1,9) --> 1
(8,9) --> 8
(9,9) --> 4
(1,8) --> 9
(5,8) --> 4
(7,7) --> 2
(7,8) --> 1
(8,5) --> 6
(9,5) --> 3
(3,8) --> 6
(5,7) --> 9
(6,5) --> 4
(6,6) --> 6
(7,1) --> 3
(7,5) --> 8
(7,6) --> 4
(9,1) --> 1
(2,7) --> 4
(3,4) --> 4
(2,4) --> 6
(8,6) --> 1

+-------+-------+-------+
| 6 4 5 | 3 2 7 | 8 9 1 |
| 8 3 1 | 6 5 . | 4 2 7 |
| 2 7 9 | 4 1 8 | 5 6 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | 9 4 6 |
| 7 9 3 | 2 4 6 | 1 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 8 4 | 2 1 9 |
| 9 5 4 | 7 6 1 | . 3 8 |
| 1 2 8 | . 3 9 | 7 5 4 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[8 in cell (1,7)]

Hence, defintely correct-
[9 in cell (1,7)]

Solving exactly...
(1,8) --> 1
(1,9) --> 8
(5,7) --> 4
(5,8) --> 9
(7,8) --> 4
(8,9) --> 1
(2,7) --> 6
(2,6) --> 4
(3,4) --> 6
(6,6) --> 6
(8,6) --> 2
(8,7) --> 8
(9,4) --> 4
(2,4) --> 9
(6,5) --> 4
(7,6) --> 1
(7,7) --> 2
(8,5) --> 6
(9,5) --> 3
(7,1) --> 3
(7,5) --> 8
(9,1) --> 1

+-------+-------+-------+
| 6 4 5 | 3 2 7 | 9 1 8 |
| 8 3 1 | 9 5 4 | 6 2 7 |
| 2 7 9 | 6 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | 4 9 6 |
| 7 9 3 | 2 4 6 | 1 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 8 1 | 2 4 9 |
| 9 5 4 | 7 6 2 | 8 3 1 |
| 1 2 8 | 4 3 9 | 7 5 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[9 in cell (6,2)]

Hence previous assumption
was correct -
[5 in cell (6,2)]
Revert to the its
solution puzzle.
(Good, I had saved it!
Saved my time!)

+-------+-------+-------+
| 6 4 5 | 3 2 7 | 9 1 8 |
| 8 3 1 | 9 5 4 | 6 2 7 |
| 2 7 9 | 6 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 5 1 2 | 8 7 3 | 4 9 6 |
| 7 9 3 | 2 4 6 | 1 8 5 |
+-------+-------+-------+
| 3 6 7 | 5 8 1 | 2 4 9 |
| 9 5 4 | 7 6 2 | 8 3 1 |
| 1 2 8 | 4 3 9 | 7 5 . |
+-------+-------+-------+

(Entering into nested
assumption...)

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (5,1)
[Other can be 9]

Solving exactly...
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,1)
[Other can be 2]

Solving exactly...
(8,2) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2]
Saving puzzle...)

Assuming 2 in cell (5,1)
[Other can be 9]

(Entering into nested
assumption...)

Solving exactly...
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 8 in cell (4,2)
[Other can be 9]

Solving exactly...
(5,3) --> 9
(5,7) --> 4
(5,4) --> 8

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (4,2)
[Other can be 8]

Solving exactly...
(5,3) --> 8
(8,1) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (4,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (5,3)
[Other can be 9]

Solving exactly...
(4,2) --> 9
(8,1) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (5,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,3)
[Other can be 8]

Solving exactly...
(4,2) --> 8
(5,7) --> 4
(5,4) --> 8

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (5,7)
[Other can be 9]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (5,7)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,7)
[Other can be 4]

Solving exactly...
(5,3) --> 8
(5,4) --> 4
(4,2) --> 9
(6,5) --> 9
(8,1) --> 9
(1,8) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . 9 . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | 4 7 3 | 9 5 6 |
| . 5 3 | 2 9 . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,7)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...
(4,4) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,1)
[Other can be 2]

(Entering into nested
assumption...)

Solving exactly...
(8,2) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 2 in cell (1,2)
[Other can be 4]

Solving exactly...
(4,2) --> 8
(5,3) --> 2
(5,7) --> 4
(9,2) --> 3
(2,2) --> 4
(5,4) --> 8
(2,9) --> 3
(3,6) --> 2
(3,1) --> 3
(3,9) --> 8
(4,9) --> 2
(7,5) --> 3

+-------+-------+-------+
| . 2 5 | 3 . . | . . . |
| 8 4 . | . 5 . | . 2 3 |
| 3 7 . | . 1 2 | 5 . 8 |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 3 . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 3 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (1,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (1,2)
[Other can be 2]

Solving exactly...
(2,2) --> 3
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (1,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 3 in cell (2,2)
[Other can be 4]

Solving exactly...
(3,9) --> 3

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
3 in (2,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (2,2)
[Other can be 3]

Solving exactly...
(1,2) --> 2
(4,2) --> 8
(5,3) --> 2
(5,7) --> 4
(9,2) --> 3
(5,4) --> 8
(2,9) --> 3
(3,6) --> 2
(3,1) --> 3
(3,9) --> 8
(4,9) --> 2
(7,5) --> 3

+-------+-------+-------+
| . 2 5 | 3 . . | . . . |
| 8 4 . | . 5 . | . 2 3 |
| 3 7 . | . 1 2 | 5 . 8 |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 3 . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 3 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (2,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (4,2)
[Other can be 8]

Solving exactly...
(1,2) --> 4
(2,2) --> 3
(5,3) --> 8
(5,4) --> 4
(5,7) --> 2
(9,2) --> 8
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 . | . . 5 | 3 . . |
| 9 1 8 | 4 7 3 | 2 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (4,2)
[Other can be 2]

Solving exactly...
(5,3) --> 2
(5,7) --> 4
(5,4) --> 8
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (5,3)
[Other can be 8]

Solving exactly...
(4,2) --> 8
(5,7) --> 4
(5,4) --> 8
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (5,3)
[Other can be 2]

Solving exactly...
(4,2) --> 2
(5,4) --> 4
(5,7) --> 2
(1,2) --> 4
(2,2) --> 3
(9,2) --> 8
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 . | . . 5 | 3 . . |
| 9 1 8 | 4 7 3 | 2 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (5,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (5,4)
[Other can be 8]

Solving exactly...
(5,7) --> 2
(5,3) --> 8
(4,2) --> 2
(1,2) --> 4
(2,2) --> 3
(9,2) --> 8
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 . | . . 5 | 3 . . |
| 9 1 8 | 4 7 3 | 2 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (5,4)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (5,4)
[Other can be 4]

Solving exactly...
(5,3) --> 2
(5,7) --> 4
(4,2) --> 8
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (5,4)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (5,7)
[Other can be 4]

Solving exactly...
(5,3) --> 8
(5,4) --> 4
(4,2) --> 2
(1,2) --> 4
(2,2) --> 3
(9,2) --> 8
(3,9) --> 3

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 2 . | . . 5 | 3 . . |
| 9 1 8 | 4 7 3 | 2 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 8 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,7)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (5,7)
[Other can be 2]

Solving exactly...
(5,4) --> 8
(5,3) --> 2
(4,2) --> 8
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 9 1 2 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (5,7)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (6,1)
[Other can be 7]

Solving exactly...
(6,9) --> 7
(4,3) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . 7 | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (6,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 7 in cell (6,1)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| 7 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
7 in (6,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

(Entering into nested
assumption...)

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 7 in cell (4,8)
[Other can be 9]

Solving exactly...
(6,1) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 7 . |
| . 1 . | . 7 3 | . 5 6 |
| 7 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
7 in (4,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (4,8)
[Other can be 7]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 9 . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (4,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (5,1)
[Other can be 9]

Solving exactly...
(4,9) --> 2
(4,4) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,1)
[Other can be 2]

Solving exactly...
(8,2) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (9,8)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 4 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (9,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (9,8)
[Other can be 4]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 6 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (9,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

(Entering into nested
assumption...)

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [2, 1]
Saving puzzle...)

Assuming 6 in cell (3,8)
[Other can be 9]

Solving exactly...
(9,8) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 6 . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 1 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (3,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (3,8)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 9 . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (3,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (5,1)
[Other can be 9]

Solving exactly...
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (5,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,1)
[Other can be 2]

Solving exactly...
(8,2) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| 9 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (9,8)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 1 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (9,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (9,8)
[Other can be 1]

Solving exactly...
(3,8) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 9 . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 6 . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (9,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . . |
| . 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [2]

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3]
Saving puzzle...)

Assuming 2 in cell (5,1)
[Other can be 9]

(Entering into nested
assumption...)

Solving exactly...
(4,9) --> 2

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 1]
Saving puzzle...)

Assuming 8 in cell (4,2)
[Other can be 9]

Solving exactly...
(5,3) --> 9
(5,7) --> 4
(5,4) --> 8

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (4,2)
[Other can be 8]

Solving exactly...
(5,3) --> 8
(8,1) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (4,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 8 in cell (5,3)
[Other can be 9]

Solving exactly...
(4,2) --> 9
(8,1) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (5,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,3)
[Other can be 8]

Solving exactly...
(4,2) --> 8
(5,7) --> 4
(5,4) --> 8

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (5,7)
[Other can be 9]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (5,7)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (5,7)
[Other can be 4]

Solving exactly...
(5,3) --> 8
(5,4) --> 4
(4,2) --> 9
(6,5) --> 9
(8,1) --> 9
(1,8) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . 9 . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | 4 7 3 | 9 5 6 |
| . 5 3 | 2 9 . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (5,7)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...
(4,4) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | 1 . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [3, 1]

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 2]
Saving puzzle...)

Assuming 8 in cell (4,2)
[Other can be 9]

(Entering into nested
assumption...)

Solving exactly...
(5,3) --> 9
(5,7) --> 4
(5,4) --> 8

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 2, 1]
Saving puzzle...)

Assuming 1 in cell (2,3)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . 1 | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (2,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (2,3)
[Other can be 1]

Solving exactly...
(3,3) --> 2
(4,3) --> 7
(6,1) --> 6
(6,9) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . 6 | . 5 . | . 2 . |
| . 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (2,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (3,3)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (3,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (3,3)
[Other can be 2]

Solving exactly...
(2,3) --> 1
(4,3) --> 7
(6,1) --> 6
(1,1) --> 9
(3,1) --> 3
(2,2) --> 4
(1,2) --> 2
(8,2) --> 9
(9,2) --> 3
(2,9) --> 3
(3,6) --> 2
(3,9) --> 8
(6,9) --> 7
(7,5) --> 3

+-------+-------+-------+
| 9 2 5 | 3 . . | . . . |
| 8 4 1 | . 5 . | . 2 3 |
| 3 7 6 | . 1 2 | 5 . 8 |
+-------+-------+-------+
| 4 8 7 | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 3 . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 3 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (3,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (4,3)
[Other can be 7]

Solving exactly...
(2,3) --> 1
(3,3) --> 2
(4,5) --> 9
(6,1) --> 7
(6,9) --> 1
(9,3) --> 8
(4,4) --> 1
(4,8) --> 7
(6,7) --> 9
(7,3) --> 7
(2,7) --> 6

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . 1 | . 5 . | 6 2 . |
| . 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 7 5 3 | 2 . . | 9 8 1 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . 8 | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (4,3)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 7 in cell (4,3)
[Other can be 6]

Solving exactly...
(6,1) --> 6
(6,9) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
7 in (4,3)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (4,5)
[Other can be 9]

Solving exactly...
(4,3) --> 7
(6,1) --> 6
(6,9) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | . 6 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (4,5)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (4,5)
[Other can be 6]

Solving exactly...
(6,7) --> 9

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . 9 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | 9 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (4,5)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (6,1)
[Other can be 7]

Solving exactly...
(4,3) --> 7
(6,9) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
6 in (6,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 7 in cell (6,1)
[Other can be 6]

Solving exactly...
(4,3) --> 6
(4,5) --> 9
(6,9) --> 1
(2,3) --> 1
(3,3) --> 2
(4,4) --> 1
(4,8) --> 7
(6,7) --> 9
(9,3) --> 8
(2,7) --> 6
(7,3) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . 1 | . 5 . | 6 2 . |
| . 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 7 5 3 | 2 . . | 9 8 1 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . 8 | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
7 in (6,1)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (6,7)
[Other can be 9]

Solving exactly...
(6,9) --> 7
(4,8) --> 9
(6,1) --> 6
(6,6) --> 4
(4,3) --> 7
(4,5) --> 6
(6,5) --> 9
(4,4) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | 1 6 5 | 3 9 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 9 4 | 1 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (6,7)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (6,7)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | 9 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (6,7)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (6,9)
[Other can be 7]

Solving exactly...
(6,7) --> 9
(4,8) --> 7
(4,3) --> 6
(4,5) --> 9
(6,1) --> 7
(2,3) --> 1
(2,7) --> 6
(3,3) --> 2
(4,4) --> 1
(9,3) --> 8
(7,3) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . 1 | . 5 . | 6 2 . |
| . 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 6 | 1 9 5 | 3 7 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 7 5 3 | 2 . . | 9 8 1 |
+-------+-------+-------+
| . 6 7 | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . 8 | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (6,9)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 7 in cell (6,9)
[Other can be 1]

Solving exactly...
(6,1) --> 6
(4,3) --> 7

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 7 | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| 6 5 3 | 2 . . | . 8 7 |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
7 in (6,9)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 1 in cell (7,8)
[Other can be 4]

Solving exactly...
(4,4) --> 1

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | 1 . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 1 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (7,8)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 4 in cell (7,8)
[Other can be 1]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . 4 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
4 in (7,8)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (8,2)
[Other can be 9]

Solving exactly...
(9,2) --> 3
(2,9) --> 3
(3,1) --> 3
(7,5) --> 3
(8,1) --> 9
(9,5) --> 2
(1,6) --> 2
(3,3) --> 2
(7,7) --> 2
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . 2 | . . . |
| 8 . . | . 5 . | . 2 3 |
| 3 7 2 | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 3 . | 2 . 9 |
| 9 2 4 | . . . | . 3 5 |
| 5 3 . | . 2 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (8,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (8,2)
[Other can be 2]

Solving exactly...

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
9 in (8,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 2 in cell (9,2)
[Other can be 3]

Solving exactly...
(8,2) --> 9
(1,2) --> 4
(2,2) --> 3
(3,9) --> 3
(3,6) --> 8
(3,3) --> 2

+-------+-------+-------+
| . 4 5 | 3 . . | . . . |
| 8 3 . | . 5 . | . 2 . |
| . 7 2 | . 1 8 | 5 . 3 |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . 9 4 | . . . | . 3 . |
| . 2 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
2 in (9,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 3 in cell (9,2)
[Other can be 2]

Solving exactly...
(2,9) --> 3
(3,1) --> 3
(7,5) --> 3

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 3 |
| 3 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 3 . | . . 9 |
| . . 4 | . . . | . 3 . |
| . 3 . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
3 in (9,2)

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 8 . | . . 5 | 3 . 2 |
| 2 1 9 | 8 7 3 | 4 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Didn't get anything from
this Assumption Level.
Assumption Tree: [3, 2, 1]

(Exiting from nested
assumption...)

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
8 in (4,2)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 . . | . . 5 | 3 . 2 |
| 2 1 . | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| . . 4 | . . . | . 3 . |
| . . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 9 in cell (4,2)
[Other can be 8]

(Entering into nested
assumption...)

Solving exactly...
(5,3) --> 8
(8,1) --> 9
(8,9) --> 5
(9,1) --> 5

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 2, 1]
Saving puzzle...)

Assuming 1 in cell (1,1)
[Other can be 6]

Solving exactly...

+-------+-------+-------+
| 1 . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Maybe. Can't say anything
as of now. Assumption was
1 in (1,1)

Saving the above puzzle.
Will be useful if other
assumption (on same cell)
is definitely incorrect.

Reverting to this puzzle
(saved at the beginning
of this assumption) -

+-------+-------+-------+
| . . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Assuming 6 in cell (1,1)
[Other can be 1]

Solving exactly...
(3,1) --> 3
(6,1) --> 7
(7,1) --> 1
(7,8) --> 4
(9,3) --> 2
(2,2) --> 4
(3,3) --> 9
(3,8) --> 6
(4,3) --> 6
(4,5) --> 8
(7,3) --> 7
(8,2) --> 8
(9,2) --> 3
(9,8) --> 1
(9,9) --> 8
(1,2) --> 2
(2,3) --> 1
(2,7) --> 9
(3,9) --> 4
(4,4) --> 1
(4,8) --> 7
(5,7) --> 4
(6,7) --> 1
(7,7) --> 2
(8,7) --> 6
(1,7) --> 8
(3,4) --> 8
(3,6) --> 2
(5,4) --> 9
(7,5) --> 3
(7,6) --> 8
(8,4) --> 7
(8,5) --> 2
(8,6) --> 1
(2,4) --> 6
(2,6) --> 7
(2,9) --> 3
(9,4) --> 4
(9,5) --> 6
(1,6) --> 4
(6,5) --> 4
(6,6) --> 6
(1,5) --> 9
(1,9) --> 1

+-------+-------+-------+
| 6 2 5 | 3 9 4 | 8 . 1 |
| 8 4 1 | 6 5 7 | 9 2 3 |
| 3 7 9 | 8 1 2 | 5 6 4 |
+-------+-------+-------+
| 4 9 6 | 1 8 5 | 3 7 2 |
| 2 1 8 | 9 7 3 | 4 5 6 |
| 7 5 3 | 2 4 6 | 1 8 . |
+-------+-------+-------+
| 1 6 7 | 5 3 8 | 2 4 9 |
| 9 8 4 | 7 2 1 | 6 3 5 |
| 5 3 2 | 4 6 9 | 7 1 8 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[6 in cell (1,1)]

Hence previous assumption
was correct -
[1 in cell (1,1)]
Revert to the its
solution puzzle.
(Good, I had saved it!
Saved my time!)

+-------+-------+-------+
| 6 2 5 | 3 9 4 | 8 . 1 |
| 8 4 1 | 6 5 7 | 9 2 3 |
| 3 7 9 | 8 1 2 | 5 6 4 |
+-------+-------+-------+
| 4 9 6 | 1 8 5 | 3 7 2 |
| 2 1 8 | 9 7 3 | 4 5 6 |
| 7 5 3 | 2 4 6 | 1 8 . |
+-------+-------+-------+
| 1 6 7 | 5 3 8 | 2 4 9 |
| 9 8 4 | 7 2 1 | 6 3 5 |
| 5 3 2 | 4 6 9 | 7 1 8 |
+-------+-------+-------+

Solving exactly...

+-------+-------+-------+
| 1 . 5 | 3 . . | . . . |
| 8 . . | . 5 . | . 2 . |
| . 7 . | . 1 . | 5 . . |
+-------+-------+-------+
| 4 9 . | . . 5 | 3 . 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| . 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| . 6 . | 5 . . | . . 9 |
| 9 . 4 | . . . | . 3 5 |
| 5 . . | . . 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 2, 1]
Saving puzzle...)

Assuming 2 in cell (1,2)
[Other can be 4]

Solving exactly...
(8,2) --> 8
(9,2) --> 3
(2,2) --> 4
(7,1) --> 7
(6,1) --> 6
(3,1) --> 3
(4,3) --> 7
(4,8) --> 1
(7,8) --> 4
(9,8) --> 6
(3,8) --> 9
(1,8) --> 7
(3,3) --> 6
(2,3) --> 9
(1,5) --> 9
(2,9) --> 3
(3,6) --> 2
(6,6) --> 1
(6,9) --> 7
(6,7) --> 9
(7,5) --> 3
(5,7) --> 4
(6,5) --> 4
(7,6) --> 8
(9,5) --> 2
(5,4) --> 9
(8,5) --> 6
(8,6) --> 7
(9,3) --> 1
(9,4) --> 4
(9,9) --> 8
(1,9) --> 4
(2,6) --> 6
(2,7) --> 1
(3,4) --> 8
(4,4) --> 6
(4,5) --> 8
(7,3) --> 2
(8,4) --> 1
(8,7) --> 2
(2,4) --> 7
(1,7) --> 6

+-------+-------+-------+
| 1 2 5 | 3 9 . | 6 7 4 |
| 8 4 9 | 7 5 6 | 1 2 3 |
| 3 7 6 | 8 1 2 | 5 9 . |
+-------+-------+-------+
| 4 9 7 | 6 8 5 | 3 1 2 |
| 2 1 8 | 9 7 3 | 4 5 6 |
| 6 5 3 | 2 4 1 | 9 8 7 |
+-------+-------+-------+
| 7 6 2 | 5 3 8 | . 4 9 |
| 9 8 4 | 1 6 7 | 2 3 5 |
| 5 3 1 | 4 2 9 | 7 6 8 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[2 in cell (1,2)]

Hence, defintely correct-
[4 in cell (1,2)]

Solving exactly...
(2,2) --> 3
(3,1) --> 6
(6,1) --> 7
(7,1) --> 3
(2,3) --> 9
(3,3) --> 2
(4,3) --> 6
(4,5) --> 8
(9,3) --> 1
(4,4) --> 1
(4,8) --> 7
(7,3) --> 7
(3,9) --> 3
(9,5) --> 3
(9,2) --> 2
(8,2) --> 8

+-------+-------+-------+
| 1 4 5 | 3 . . | . . . |
| 8 3 9 | . 5 . | . 2 . |
| 6 7 2 | . 1 . | 5 . 3 |
+-------+-------+-------+
| 4 9 6 | 1 8 5 | 3 7 2 |
| 2 1 8 | . 7 3 | . 5 6 |
| 7 5 3 | 2 . . | . 8 . |
+-------+-------+-------+
| 3 6 7 | 5 . . | . . 9 |
| 9 8 4 | . . . | . 3 5 |
| 5 2 1 | . 3 9 | 7 . . |
+-------+-------+-------+

Puzzle complete?
> Not yet!

(New Assumption Level.
Assumption Tree: [3, 2, 1]
Saving puzzle...)

Assuming 6 in cell (1,8)
[Other can be 9]

Solving exactly...
(9,8) --> 4
(9,9) --> 8
(1,9) --> 7
(3,8) --> 9
(7,8) --> 1
(9,4) --> 6
(1,7) --> 8
(7,7) --> 2
(8,4) --> 7
(8,5) --> 2
(8,6) --> 1
(8,7) --> 6
(1,5) --> 9
(1,6) --> 2
(2,4) --> 4
(2,7) --> 1
(3,4) --> 8
(5,4) --> 9
(5,7) --> 4
(6,7) --> 9
(6,9) --> 1
(7,5) --> 4
(7,6) --> 8
(6,5) --> 6
(6,6) --> 4
(2,6) --> 6

+-------+-------+-------+
| 1 4 5 | 3 9 2 | 8 6 7 |
| 8 3 9 | 4 5 6 | 1 2 . |
| 6 7 2 | 8 1 . | 5 9 3 |
+-------+-------+-------+
| 4 9 6 | 1 8 5 | 3 7 2 |
| 2 1 8 | 9 7 3 | 4 5 6 |
| 7 5 3 | 2 6 4 | 9 8 1 |
+-------+-------+-------+
| 3 6 7 | 5 4 8 | 2 1 9 |
| 9 8 4 | 7 2 1 | 6 3 5 |
| 5 2 1 | 6 3 9 | 7 4 8 |
+-------+-------+-------+

Puzzle complete?
> Not yet!

Assumption correct?
Definately incorrect!
[6 in cell (1,8)]

Hence, defintely correct-
[9 in cell (1,8)]

Solving exactly...
(3,8) --> 4
(7,8) --> 1
(9,8) --> 6
(3,6) --> 8
(8,7) --> 2
(3,4) --> 9
(5,4) --> 4
(5,7) --> 9
(6,6) --> 6
(8,5) --> 6
(9,4) --> 8
(9,9) --> 4
(1,5) --> 2
(1,6) --> 7
(1,9) --> 8
(2,4) --> 6
(2,6) --> 4
(2,7) --> 1
(2,9) --> 7
(6,5) --> 9
(6,7) --> 4
(6,9) --> 1
(7,5) --> 4
(7,6) --> 2
(7,7) --> 8
(8,4) --> 7
(8,6) --> 1
(1,7) --> 6

+-------+-------+-------+
| 1 4 5 | 3 2 7 | 6 9 8 |
| 8 3 9 | 6 5 4 | 1 2 7 |
| 6 7 2 | 9 1 8 | 5 4 3 |
+-------+-------+-------+
| 4 9 6 | 1 8 5 | 3 7 2 |
| 2 1 8 | 4 7 3 | 9 5 6 |
| 7 5 3 | 2 9 6 | 4 8 1 |
+-------+-------+-------+
| 3 6 7 | 5 4 2 | 8 1 9 |
| 9 8 4 | 7 6 1 | 2 3 5 |
| 5 2 1 | 8 3 9 | 7 6 4 |
+-------+-------+-------+

Puzzle complete?
> Complete!
(Exiting from nested
assumption...)

Puzzle complete?
> Complete!
(Exiting from nested
assumption...)

Puzzle complete?
> Complete!
=========================
[1.27 sec.]
