1
2
3
4
5
6
7
8
9
9
8
7
1
2
3
4
5
6
3
6
9
1
4
2
1

这个数独谜题有 9 个步骤，它使用 Locked Pair, Naked Single, Locked Candidates Type 1 (Pointing), Give Up 技术解决。

Naked Single 解释
Locked Candidates 解释
尝试解决

解决步骤：

  1. Locked Pair: 4,7 in r89c2 => r456c2,r89c3<>4, r4567c2,r789c3<>7
  2. 排 7 / 柱子 2 → 1 (Naked Single)
  3. Locked Candidates Type 1 (Pointing): 2 in b7 => r456c3<>2
  4. Locked Candidates Type 1 (Pointing): 5 in b7 => r456c3<>5
  5. Locked Candidates Type 1 (Pointing): 8 in b7 => r456c3<>8
  6. Locked Candidates Type 1 (Pointing): 5 in b9 => r456c7<>5
  7. Locked Candidates Type 1 (Pointing): 8 in b9 => r456c7<>8
  8. Locked Candidates Type 1 (Pointing): 9 in b9 => r456c8<>9
  9. Give Up: Don't know how to proceed!
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