專家對角線數獨
兩條主對角線也必須包含1–9且不重複。四個單元而非三個——約束密度加倍。
專家 對角線數獨。網站上最難的謎題——每個單元格有五個限制組，給定數字非常少。每個填入都來自精確的邏輯。無需猜測。
6
3
1
7
4
3
8
2
4
3
7
9
4
5
1
8
5
4
7
1
6
6
9
7
4
9
1
什麼是 對角線數獨？
難度
★★☆☆☆
2/5
約束類型
額外區域
典型給定數
22–28
平均解題時間（專家）
40分鐘
解題技巧：專家 等級
| 技巧 | 描述 | 等級 |
|---|---|---|
| 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. | 初學者 |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | 中級 |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | 中級 |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | 進階 |
在 專家 需要掌握的技巧
- X-Wing 技巧 — Expert diagonal grids hide X-Wings whose only useful eliminations land on the diagonals — re-scan both diagonals after every fish you complete.
- Swordfish technique — A Swordfish with corners near r1c1, r5c5, or r9c9 cascades its column eliminations into the diagonal houses; expert puzzles here are built around exactly this interaction.
依難度平均解題時間
簡單
4分鐘
中等
10分鐘
困難
20分鐘
專家
40分鐘
想要規則、策略和解題步驟的完整演練嗎？
如何遊玩 對角線數獨 →
相關變體
不規則對角線數獨
Keeps both diagonal houses you've learned to scan and adds jigsaw regions for an even denser constraint web.
Hyper數獨
The same extra-region idea — four shaded windows instead of two diagonals — so your habit of scanning bonus houses transfers directly.
拼圖數獨
If you enjoy adapting your scan to new house shapes, jigsaw regions stretch that skill further than straight diagonal lines.
常見問題 — 專家 對角線數獨
還有問題？請參閱完整 對角線數獨指南.