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Solution 1. The column player replaces A by 2. This forces the row player to play in the same row and therefore to replace B by 6 to satisfy the row constraint, yielding:
| 8 | 1 | 5 | 3 | 4 | 9 | 2 | 6 | 7 |
| 7 | 2 | 4 | 6 | 5 | 1 | 8 | 9 | 3 |
| 3 | 9 | 6 | 8 | 7 | 2 | 4 | 1 | 5 |
| 1 | 4 | 7 | 5 | 2 | 8 | 6 | 3 | 9 |
| C | 8 | 2 | 9 | 3 | 6 | D | E | 1 |
| 9 | 6 | 3 | F | 1 | 7 | G | H | I |
| 2 | 3 | 1 | J | 8 | K | 9 | 5 | 6 |
| 6 | 7 | 8 | 1 | 9 | 5 | 3 | 2 | 4 |
| L | 5 | 9 | 2 | M | 3 | 1 | 7 | N |
Now, the column player replaces J by 4, yielding:
| 8 | 1 | 5 | 3 | 4 | 9 | 2 | 6 | 7 |
| 7 | 2 | 4 | 6 | 5 | 1 | 8 | 9 | 3 |
| 3 | 9 | 6 | 8 | 7 | 2 | 4 | 1 | 5 |
| 1 | 4 | 7 | 5 | 2 | 8 | 6 | 3 | 9 |
| C | 8 | 2 | 9 | 3 | 6 | D | E | 1 |
| 9 | 6 | 3 | F | 1 | 7 | G | H | I |
| 2 | 3 | 1 | 4 | 8 | K | 9 | 5 | 6 |
| 6 | 7 | 8 | 1 | 9 | 5 | 3 | 2 | 4 |
| L | 5 | 9 | 2 | M | 3 | 1 | 7 | N |
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