- Code: Select all
*-------------------------------------------------------------------------*
| 6 78 78 | 129 5 4 | 129 3 129 |
| 9 1 3 | 7 #26 8 | 26 4 5 |
| 2 5 4 | 1369 1369 369 | 16789 16789 179 |
|-----------------------+------------------------+------------------------|
| 18 368 268 | 4 7 2369 | b139 5 b139 |
| 147 9 a27 | 5 8 a#23 | c1347 a17 6 |
| 457 3467 567 | 369 #369 1 | 3479 2 8 |
|-----------------------+------------------------+------------------------|
| 4578 4678 1 | 689 #69 5679 | 23 6789 23 |
| 78 678 9 | 12368 1236 367 | 5 1678 4 |
| 3 2 5678 | 1689 4 5679 | 16789 16789 179 |
*-------------------------------------------------------------------------*
4 digits in 4 cells r267c5,r5c6 (only 2 can be twice): 3r5c6&2r2c5 = 2r5c6
3r5c6&2r2c5 = 271r5c638 - (1=3)r4c79 - r5c7 = 3r5c6&2r2c5 => 3r5c6, 2r2c5; stte
(after all the 4 digits are just used to avoid the need of the pair 69 after fixing 3r5c6)