Hard to help you solving the puzzle, because your pencil marks (pm in our common use in this forum) are inconsistant. They should look like this (look at the digits, forget the separators...):
- Code: Select all
+---------------------+-----------------+-------------------+
| 5679 579 569 | 8 2 3 | 69 4 1 |
| 1 8 39 | 4 5 6 | 7 2 39 |
| 26 23 4 | 7 9 1 | 5 8 36 |
+---------------------+-----------------+-------------------+
| 27 4 1 | 6 8 9 | 23 37 5 |
| 569 59 8 | 2 3 7 | 4 1 69 |
| 3 279 269 | 1 4 5 | 269 679 8 |
+---------------------+-----------------+-------------------+
| 8 6 359 | 35 7 2 | 1 359 4 |
| 59 1 7 | 35 6 4 | 8 359 2 |
| 4 235 235 | 9 1 8 | 36 356 7 |
+---------------------+-----------------+-------------------+
Here is yours, with inconsistencies:
- Code: Select all
5679 579 69 | 8 2 3 | 569 4 1 -5r1c3 +5r1c7
1 8 39 | 4 5 6 | 7 2 39
256 235 4 | 7 9 1 | 5 8 36 +5r3c12
------------------+--------------------+-------------------
27 4 1 | 6 8 9 | 23 39 5 -7r4c8 +9r4c8
569 59 8 | 2 3 7 | 4 1 69
3 279 269 | 1 4 5 | 269 2679 8 +2r6c8
------------------+--------------------+-------------------
8 6 359 | 35 7 2 | 1 359 4
59 1 7 | 35 6 4 | 8 359 2
4 25 235 | 9 1 8 | 36 356 7 -3r9c2
The digits in excess +5r1c7, +5r3c12, +9r4c8, +2r6c8 should be eliminated due to the placements you got: 5r3c7, 9r4c6, 2r2c8.
For the missing digits 5r1c3, 7r4c8, 3r9c2, I don't know how you got their eliminations. They are actually not part of the puzzle solution. If your eliminations are valid steps, then the puzzle is solved with singles:
- no 7 @r4c8 => +7 r4c1; ste (ste Singles To the End)
- no 3 @r9c2 => +3 r3c2; ste
Otherwise, using only your 52 placements (givens or solved cells), i.e. with my pm above, a last step named AIC (Alternate Inference Chain) is needed:
(6=3)r3c9 - r3c2 = r9c2 - (3=6) r9c7 => r1c7<>6; ste
As I can't know your skills in this kind of technique, I do not explain further, but I can try to do so later.
To have your pm all in line, you must have it already in line before posting it, e.g. using "Notepad" with Windows OS, or using any text software allowing fixed fonts. The "code" "/code" (with square brackets) tags must be used to avoid the space character compression, so to have the pm displayed in its original format.