Five AIC steps:
- Code: Select all
+--------------------+-----------------------+-------------------+
| 1 2 3 | 4 5 6 | 7 8 9 |
| 9 56 67 | 237 378 Bb238 | 35 4 1 |
| 8 45 47 | 1379 1379 13 | 6 35 2 |
+--------------------+-----------------------+-------------------+
| 357 1 248 | 357 347 9 | 48 27 6 |
| 367 f38 g4689 | 1367 2 g134 | g489 17 5 |
| 567 46 2469 | 8 1467 145 | 49 127 3 |
+--------------------+-----------------------+-------------------+
| 4 9 Dd68 | 1356 1368 Cc1358 | 2 356 7 |
| 2 e38 1 | 3569 3689 7 | 35 356 4 |
| E36 7 5 | 236 346 Aa2-34 | 1 9 8 |
+--------------------+-----------------------+-------------------+
1. (2)r9c6 = (2-8)r2c6 = r7c6 - r7c3 = r8c2 - r5c2 = (89-4)r5c37 = (4)r5c6 => -4 r9c6
2. (2)r9c6 = (2-8)r2c6 = r7c6 - (8=6)r7c3 - (6=3)r9c1 => -3 r9c6; lcls, 7 placements
- Code: Select all
+------------------+-----------------------+------------------+
| 1 2 3 | 4 5 6 | 7 8 9 |
| 9 56 67 | 2 378 38 | 35 4 1 |
| 8 45 47 | 1379 1379 13 | 6 35 2 |
+------------------+-----------------------+------------------+
| 357 1 48 | 357 37 9 | 48 2 6 |
| 367 38 9 | 1367 2 134 | 48 17 5 |
| 567 46 2 | 8 167 145 | 9 17 3 |
+------------------+-----------------------+------------------+
| 4 9 68 | 1356 1368 1358 | 2 a35-6 7 |
| 2 c38 1 | f3569 f3689 7 | b35 gb356 4 |
| d36 7 5 | e36 4 2 | 1 9 8 |
+------------------+-----------------------+------------------+
3. (3)r7c8 = r8c78 - r8c2 = (3-6)r9c1 = r9c4 - r8c45 = (6)r8c8 => -6 r7c8; 1 placement
- Code: Select all
+------------------+-----------------------+-----------------+
| 1 2 3 | 4 5 6 | 7 8 9 |
| 9 56 67 | 2 378 38 | c35 4 1 |
| 8 a45 a47 | f139-7 1379 13 | 6 b35 2 |
+------------------+-----------------------+-----------------+
| 357 1 48 | 357 37 9 | 48 2 6 |
| 367 38 9 | 1367 2 134 | 48 17 5 |
| 567 46 2 | 8 167 145 | 9 17 3 |
+------------------+-----------------------+-----------------+
| 4 9 68 | 1356 1368 1358 | 2 35 7 |
| 2 38 1 | e359 389 7 | d35 6 4 |
| 36 7 5 | 36 4 2 | 1 9 8 |
+------------------+-----------------------+-----------------+
4. (7=45)r3c23 - r3c8 = r7c8 - r8c7 = (5-9)r8c4 = 9r3c4 => -7 r3c4; lcls, 1 placement
- Code: Select all
+------------------+----------------------+-----------------+
| 1 2 3 | 4 5 6 | 7 8 9 |
| 9 56 67 | 2 78 38 | 35 4 1 |
| 8 45 47 | 139 179 13 | 6 35 2 |
+------------------+----------------------+-----------------+
| 57 1 48 | 57 3 9 | 48 2 6 |
| 367 38 9 | 167 2 a14 | 48 17 5 |
| 567 b46 2 | 8 b16 15-4 | 9 17 3 |
+------------------+----------------------+-----------------+
| 4 9 68 | 1356 168 1358 | 2 35 7 |
| 2 38 1 | 359 89 7 | 35 6 4 |
| 36 7 5 | 36 4 2 | 1 9 8 |
+------------------+----------------------+-----------------+
5. Y-Wing (4=1)r5c6 - (1=64)r6c25 => -4 r6c6; ste