困難反國王數獨
兩個相同的數字不能對角相鄰（如同西洋棋中國王的移動）。每個儲存格最多有8個受限的相鄰格。
困難 反國王數獨。長的刪除鏈交織通過對角線和標準約束—— 筆記 並且系統性初始化是必要的。
8
7
6
4
2
5
4
9
5
1
3
9
7
5
2
8
6
5
1
8
9
9
2
4
6
1
7
什麼是 反國王數獨？
難度
★★★☆☆
3/5
約束類型
反限制
典型給定數
22–28
平均解題時間（困難）
26分鐘
解題技巧：困難 等級
| 技巧 | 描述 | 等級 |
|---|---|---|
| Diagonal Exclusion | The king constraint extends the exclusion zone to all 8 neighbours including diagonals. Apply diagonal exclusions before standard row/col/box logic. | 初學者 |
| Corner Restriction | Corner cells (e.g., r1c1) only have 3 king-move neighbours. Start with corners and edges to build initial placements. | 中級 |
| King-Chain Elimination | When a digit is placed, eliminate it simultaneously from all 8 surrounding cells. | 中級 |
| Parity via King's Move | In Anti-King, consecutive digits often become mutually king-move incompatible — trace valid placement paths using this property. | 進階 |
準備好終極測試了嗎？試試 專家 反國王數獨 — 數獨 上最難的謎題。
在 困難 需要掌握的技巧
- Hidden Pairs technique — King-move eliminations quietly remove candidates that would otherwise hide a pair — recount each box after diagonal eliminations and pairs surface where none seemed possible.
- X-Wing 技巧 — Hard Anti-King grids use diagonal adjacency to break would-be X-Wing cells; verify each corner of your rectangle isn't a king's move from the same digit before eliminating.
依難度平均解題時間
簡單
5分鐘
中等
13分鐘
困難
26分鐘
專家
48分鐘
想要規則、策略和解題步驟的完整演練嗎？
如何遊玩 反國王數獨 →
相關變體
反騎士數獨
The companion chess constraint — the forbidden repeat jumps a knight's move instead of one diagonal step.
反連續數獨
Forbids a value relationship instead of a position: neighbours may touch, but their digits can't be consecutive.
非連續數獨
Another global anti-rule solved with the same reflex — every placement immediately bans candidates around it.
常見問題 — 困難 反國王數獨
還有問題？請參閱完整 反國王數獨指南.