(8=4)r4c8 - (4)r4c7 = (4-6)r1c7 = (6-8)r1c8 => -8 r1c8
8s at r45c8 only ones in row/column => -8 r45c9 =>
- Code: Select all
3 578 29 | 2578 278 1 | 467 469 4789
29 78 4 | 278 6 3 | 1 5 789
15678 1578 1678 | 578 9 4 |f37 2 g378
------------------------+----------------------+---------------------
789 6 5 | 3 a127 279 | 24 48 24-1
789 4 789 | 9-1 5 279 | 236 368 h123
12 3 12 | 6 4 8 | 9 7 5
------------------------+----------------------+---------------------
4 9 678 | 278 3 2567 |e257 1 d27
56 2 3 | 19 b17 56 | 8 49 c479
1578 1578 178 | 4 278 2579 |e2357 39 6
(1)r4c5 = (1-7)r8c5 = (7^)r8c9 - (7=2*)r7c9 - (2|7^=3)r79c7 - (3)r3c7 = (3)r3c9 - (3|2*=1)r5c9 => -1 r4c9, -1 r5c4; stte
Phil