Thanks for your nice solutions !
My solution path, after basics, is
- Code: Select all
,-----------------------------------------------------------------------------,
| 49 2 8 | 6 13 49 | 15 7 135 |
| 467 5 146 | 2 13 478 | 9 1348 1348 |
| 479 1479 3 | 47 5 4789 | 6 148 2 |
|-------------------------+-------------------------+-------------------------|
| 5 (18) 2 | 3 47 47 | 18 9 6 |
| 4789 78-49 (49) | 1 6 5 | 3 2 48 |
| 3 6 (14) | 9 8 2 | 147 5 147 |
|-------------------------+-------------------------+-------------------------|
| 1 (3489) 5-49 | 478 2 6 | 4578 348 345789 |
| 24689 (3489) 7 | 5 49 1 | 248 3468 3489 |
| 24689 (489) 56-49 | 478 479 3 | 124578 1468 145789 |
'-----------------------------------------------------------------------------'
1. NP(49)r45c3 = (1)r6c3 - (1=8)r4c2 - (8=349)r789c2 => -49 r5c2, r79c3; ste