Two simple steps (M2-Wing, BUG+1)
- Code: Select all
+--------------------+--------------------+-----------------+
| 7 a68 46 | 349 348 1 | 5 89 2 |
| 89 1 3 | 29 258 589 | 6 4 7 |
| 289 5 24 | 6 7 489 | 3 89 1 |
+--------------------+--------------------+-----------------+
| 13 24 8 | 234 9 6 | 7 12 5 |
| 13 9 5 | 8 23 7 | 4 12 6 |
| 6 24 7 | 1 245 45 | 8 3 9 |
+--------------------+--------------------+-----------------+
| 28 7 12 | 5 148 348 | 9 6 34 |
| 4 3-6 169 | 7 d16 39 | 2 5 8 |
| 5 b368 69 | 49 c468 2 | 1 7 34 |
+--------------------+--------------------+-----------------+
1. (6=8)r1c2 - r9c2 = (8-6)r9c5 = (6)r8c5 => -6 r8c2; 9 placements; NT(168)r789c5
- Code: Select all
+------------------+-----------------+-----------------+
| 7 68 46 | 39 34 1 | 5 89 2 |
| 89 1 3 | 29 25 58 | 6 4 7 |
| 29+8 5 24 | 6 7 48 | 3 89 1 |
+------------------+-----------------+-----------------+
| 13 4 8 | 23 9 6 | 7 12 5 |
| 13 9 5 | 8 23 7 | 4 12 6 |
| 6 2 7 | 1 45 45 | 8 3 9 |
+------------------+-----------------+-----------------+
| 28 7 12 | 5 18 3 | 9 6 4 |
| 4 3 16 | 7 16 9 | 2 5 8 |
| 5 68 9 | 4 68 2 | 1 7 3 |
+------------------+-----------------+-----------------+
2. BUG+1 => +8 r3c1; ste