With three (very) simple steps:
- Code: Select all
+-----------------------+------------------------+----------------------+
| 9 124 245 | 123 7 12348* | d38*-5 25 6 |
| 127 3 267 | 1269 1268 5 | 79-8 4 289 |
| 57 246 8 | 2369 236 234 | 1 a57 239 |
+-----------------------+------------------------+----------------------+
| 1235 7 2359 | 8 45 6 | 49 129 1249 |
| 4 689* 69 | 123 123 123 | c6789* b679 5 |
| 1258 126-8 256 | 7 45 9 | 46-8 3 1248 |
+-----------------------+------------------------+----------------------+
| 378 49-8 1 | 356 368 37-8 | 2 569 349 |
| 237 5 2379 | 4 1236 1237 | 369 8 139 |
| 6 248* 234 | 1235 9 1238* | 345 15 7 |
+-----------------------+------------------------+----------------------+
Swordfish (8) r159\c267 => -8 r67c2,r7c6,r26c7
H-wing (5=7)r3c8 - r5c8 = (7-8)r5c7 = (8)r1c7 => -5 r1c7; 13 placements + basics
- Code: Select all
+---------------------+---------------------+------------------+
| 9 124 245 | 123 7 2348 | 38 25 6 |
| b127 3 b267 | 69 128 5 | c79 4 289 |
| a57 246 8 | 69 23 234 | 1 57 239 |
+---------------------+---------------------+------------------+
| 123 7 239 | 8 5 6 | 4 29 12 |
| 4 68 69 | 123 123 23 | d78 79 5 |
| f128-5 12 25 | 7 4 9 | 6 3 e128 |
+---------------------+---------------------+------------------+
| 38 9 1 | 5 38 7 | 2 6 4 |
| 27 5 27 | 4 6 1 | 39 8 39 |
| 6 48 34 | 23 9 238 | 5 1 7 |
+---------------------+---------------------+------------------+
(5=7)r3c1 - r2c13 = r2c7 - (7=8)r5c7 - r6c9 = (8)r6c1 => -5 r6c1; stte