Got stuck here but then found some really fun moves.
Code: Select all
.------------------.------------------.------------------.
| 58 46 589 | 568 7 4589 | 3 2 1 |
| 1 46 289 | 3 2489 2689 | 49 5 7 |
| 3 7 25 | 245 2459 1 | 69 68 489 |
:------------------+------------------+------------------:
| 58 239 7 | 1 24589 69 | 245 68 3489 |
| 4 29 1 | 2568 3 2589 | 2589 7 689 |
| 6 239 58 | 7 24589 2458 | 24589 1 389 |
:------------------+------------------+------------------:
| 9 1 4 | 258 6 258 | 7 3 25 |
| 7 8 6 | 245 245 3 | 1 9 25 |
| 2 5 3 | 9 1 7 | 68 4 68 |
'------------------'------------------'------------------'
5 in r1c1 -> 8 in D\ must be in r6c6 or r9c9 ->(cross-over) -> 8 cannot be in r6c9
5 in r4c1 -> 8 in r6c3 -> no 8 in r6c9
-> no 8 in r6c9
Another one - this is the one that unlocks the puzzle.
5 in r1c1 -> 8 in r4c1 -> 6 in r4c8 -> no 6 in r5c9
5 in r4c1 -> 8 in r1c1 -> 6 in r9c9 -> no 6 in r5c9
-> no 6 in r5c9
-> r9c9 = 6 etc
Maybe Para can find another simpler way and teach me something else new. Thanks for showing us that move for the Dec 22 X-treme Para