eleven wrote:Cenoman wrote:Mike's puzzle is automorphic : central symmetry and digit permutation [1,9] [2,8] [3,7] [4,4],[5,6]
But, this time it doesn't help solving it, after basics, 4 is already placed in r5c5, and as already mentionned by other players, there are several ste one-step solutions.
- Code: Select all
+----------------------+----------------------+----------------------+
| 36 127 17 | 9 8 4 | 13 d2357 12567 |
| 489 1278 1479 | 3 5 6 | 149 279 1247 |
| 49 36 5 | 7 1 2 | 8 39 46 |
+----------------------+----------------------+----------------------+
| 1 9 6 | 2 3 5 | 7 4 8 |
| 7 5 8 | 1 4 9 | 2 6 3 |
| 2 4 3 | 6 7 8 | 5 1 9 |
+----------------------+----------------------+----------------------+
| 45 17 2 | 8 9 3 | 6 a7-5 14 |
| 3489 138 149 | 5 6 7 | 1349 2389 124 |
|c35689 d3678 79 | 4 2 1 | 39 389 b57 |
+----------------------+----------------------+----------------------+
(7=5)r7c8 - r9c9 = (5-6)r9c1 = 6r9c2 & 5r1c8 => -5r7c8, stte
Thanks for spotting the missing [5,6]
Nice solution of yours, using the symmetry !
May I suggest: (5)r9c9 = (5-6)r9c1 = 6r9c2 & 5r1c8 => -5r7c8, stte ?
