困难 对角线数独
两条主对角线也必须包含1-9且不重复。四个单元而不是三个——约束密度加倍。
困难 对角线数独。对角线 X翼，多约束宫交集，以及深度消除链——铅笔标记必不可少。
9
5
3
7
6
5
3
4
7
9
6
3
4
7
1
7
5
4
2
9
4
1
6
2
6
9
5
什么是对角线数独？
难度
★★☆☆☆
2/5
约束类型
额外区域
典型给定数
22–28
平均解题 (困难)
20 分钟
困难 级别的解题技巧
| 技巧 | 描述 | 级别 |
|---|---|---|
| Diagonal as a Unit | Treat each diagonal exactly like a row or column — every digit 1–9 appears exactly once. Standard scanning and counting apply. | 初级 |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | 中级 |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | 中级 |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | 高级 |
准备好终极测试了吗?试试 专家 对角线数独 — 数独 上最难的谜题。
在困难需要掌握的技巧
- Hidden Pairs technique — With four houses squeezing every diagonal cell, two digits frequently get cornered into the same two cells of a diagonal — check both diagonals for hidden pairs first.
- X翼技巧 — An X-Wing whose corner lands on a main diagonal also strips that digit from the rest of the diagonal, turning a two-column elimination into a three-house sweep.
按难度划分的平均解题时间
简单
4 分钟
中等
10 分钟
困难
20 分钟
专家
40 分钟
想要规则、策略和解题步骤的完整指南吗？
如何玩对角线数独 →
相关变体
不规则对角线数独
Keeps both diagonal houses you've learned to scan and adds jigsaw regions for an even denser constraint web.
超数独
The same extra-region idea — four shaded windows instead of two diagonals — so your habit of scanning bonus houses transfers directly.
锯齿数独
If you enjoy adapting your scan to new house shapes, jigsaw regions stretch that skill further than straight diagonal lines.
常见问题 — 困难 对角线数独
更多问题？请参阅完整 对角线数独指南.