.....3..54...7...........2....26.......4..9..3.........6.5..1.2.25...........84..
rjamil wrote:I think -2r7c9 will make it harder.
.....3..54...7...........2....26.......4..9..3.........6.5..1...25...........84..
.----------------------.-------------------------.-----------------------.
| 26 1789 126789 | 1689 12489 3 | 678 146789 5 |
| 4 13589 123689 | 1689 7 1269-5 | 368 1689 1689 |
| 56 135789 136789 | 1689 14589 1469-5 | 3678 2 146789 |
:----------------------+-------------------------+-----------------------:
| 179 14789 1789 | 2 6 ad179 | 5 13478 13478 |
| 256 1578 12678 | 4 3 ad1(5)7 | 9 1678 1678 |
| 3 14579 1679 | 1789 189-5 ad1(5)79 | 2 1467 1467 |
:----------------------+-------------------------+-----------------------:
| 789 6 4 | 5 29 ad279 | 1 3789 23789 |
| 1789 2 5 | 3 149 d14679 | 678 6789 6789 |
| 179 1379 1379 | c1679 b129 8 | 4 5 c2679 |
'----------------------'-------------------------'-----------------------'
+------------------------+-----------------------+------------------------+
|i26 1789 126789 | 1689 1489-2 3 | 678 146789 5 |
| 4 13589 123689 | 1689 7 a12569 | 368 1689 1689 |
|i56 135789 136789 | 1689 h14589 14569 | 3678 2 146789 |
+------------------------+-----------------------+------------------------+
| 179 14789 1789 | 2 6 179 | 5 13478 13478 |
| 256 1578 12678 | 4 3 157 | 9 1678 1678 |
| 3 14579 1679 |f1789 g1589 1579 | 2 1467 1467 |
+------------------------+-----------------------+------------------------+
| 789 6 4 | 5 29 b279 | 1 3789 c23789 |
| 1789 2 5 | 3 149 14679 | 678 6789 6789 |
| 179 1379 1379 | e1679 129 8 | 4 5 d2679 |
+------------------------+-----------------------+------------------------+
.-------------------------.-------------------.-----------------.
| 569 2 3 | 7 4568 1568 | 169 16 1469 |
| 679 679 4 | 3 26 126 | 8 5 1679 |
| 567 8 1 | 9 456 56 | 3 2 467 |
:-------------------------+-------------------+-----------------:
| 4 179 6 | 5 379 379 | 179 8 2 |
| 3 1579 a57(8)9-2 | 18 2679 4 | 15679 16 169 |
| b1(2) 1579 b25789 | b18 2679 2679 | 15679 4 3 |
:-------------------------+-------------------+-----------------:
| 8 4 579 | 2 579 579 | 16 3 16 |
| 12 13579 2579 | 6 35789 35789 | 4 79 58 |
| 679 35679 579 | 4 1 35789 | 2 79 58 |
'-------------------------'-------------------'-----------------'