Hi Bunny,
You've missed a couple of basics, though they don't make any difference:
Naked Pair (37) box2
Naked Pair (25) column3
-> Pointing Pair (2) box4\row5
Probably the easiest move that solves the puzzle (whether those basics are done or not):
- Code: Select all
.--------------.-----------------.---------------.
| 4 28 25 | 6 589 89 | 7 1 3 |
| 357 378 9 | 37 58 1 | 6 4 2 |
| 137 137 6 | 4 *37 2 | 5 9 8 |
:--------------+-----------------+---------------:
| 17 4 18 | 27 2679 5 | 89 3 67 |
| 9 27 25 | 8 67 3 | 1 567 4 |
| 357 6 38 | 1 4 79 | 89 2 57 |
:--------------+-----------------+---------------:
| 8 13 4 | 9 *237 67 | 23 567 1567 |
| 2 9 13 | 5 78-3 678 | 4 67 167 |
| 6 5 7 | *23 1 4 | 23 8 9 |
'--------------'-----------------'---------------'
XYZ-Wing (237)r37c5,r9c4 => -3 r8c5; stte