困難立方體/3D 數獨

一個經典的9×9網格折疊到立方體的表面。行和列在三維空間中跨越面邊界環繞。

困難 立方體數獨。跨網格鎖定候選數和跨153個單元格的多單元追蹤——對有經驗的解題者來說是嚴峻挑戰。

分數
0
錯誤
0/3
時間
00:00
網格A
2
6
7
5
9
2
7
5
6
4
4
2
5
3
6
6
7
8
5
3
8
6
4
7
8
2
7
6
9
2
1
8
5
6
9
6
1
7
4
2
4
2
2
9
7
7
4
5
網格A 已分享 網格B
網格B
嘗試專家立方體數獨 →
困難 · 立方體/3D · 2 個網格 (153 格)0%
如何遊玩立方體/3D數獨
兩個 9×9 數獨網格在一個共享的 3×3 角落方塊重疊。網格 A(藍色色調)涵蓋第 1–9 行、第 1–9 列。網格 B(綠色色調)涵蓋第 7–15 行、第 7–15 列。共享方塊(第 7–9 行、第 7–9 列)滿足兩個網格。每個網格必須獨立滿足標準數獨規則。
如何遊玩立方體 / 3D數獨 →

什麼是 立方體 / 3D數獨?

難度
★★★★☆
4/5
約束類型
Twin Grids
典型給定數
~30 per grid
平均解題時間(困難)
60分鐘

解題技巧:困難 等級

技巧 描述 等級
Shared Box Exploitation The overlapping 3×3 box satisfies both grids. Digits placed here eliminate from rows and columns in both Grid A and Grid B simultaneously. 初學者
Grid A/B Isolation Outside the shared box, each grid operates independently. Apply standard 9×9 Sudoku logic to each grid in turn. 中級
Cross-Grid Cascade Completing the shared box often cascades through the adjacent rows and columns of both grids, rapidly resolving nearby cells. 中級
Overlap Constraint The shared box must satisfy: Grid A's bottom-right box rules, AND Grid B's top-left box rules, AND both grids' overlapping row/column constraints. 進階
Twin Digit Counting Each digit appears 9 times in Grid A and 9 times in Grid B, but only once in the shared box. This counting helps verify near-complete grids. 進階

準備好終極測試了嗎?試試 專家 立方體 / 3D數獨 — 數獨 上最難的謎題。

在 困難 需要掌握的技巧

  • Hidden Pairs technique — Cross-grid traffic through the overlap silently prunes the boxes adjacent to it — recount those eight boxes (four per grid) regularly; hard cube grids hide pairs exactly there.
  • X-Wing 技巧 — Build fish strictly within one grid — rows of grid A and grid B never combine — but prioritise X-Wings whose eliminations touch the shared box, since those feed both grids.

依難度平均解題時間

簡單
15分鐘
中等
32分鐘
困難
60分鐘
專家
95分鐘
想要規則、策略和解題步驟的完整演練嗎? 如何遊玩 立方體 / 3D數獨 →

相關變體

Samurai數獨

The full-scale version of multi-grid solving — five grids instead of two, all trading digits through shared boxes.

Hyper數獨

Overlap logic inside a single grid: four windows that share cells with the standard boxes the way your grids share a corner.

拼圖數獨

A single-grid geometry challenge — irregular regions demand the same spatial flexibility as twin-grid bookkeeping.

常見問題 — 困難 立方體數獨

困難的立方體數獨為何困難?
困難的立方體 Sudoku 謎題有更少的給定數字,迫使你在每個網格內使用高級 Sudoku 技巧並大量利用跨網格交互。共享區域的雙重成員資格創建了複雜的約束網絡,需要同時追蹤 18 行和 18 列的候選數。
在困難級立方體數獨中,鎖定候選數如何跨網格運作?
A locked candidate in Grid A's shared region can eliminate candidates in Grid B's corresponding rows and columns even though those cells are in a different grid. For example, if a digit can only appear in two cells of the shared box that both lie in row 8 of Grid A, you eliminate it from the rest of Grid A's row 8. But since those cells also belong to row 8 of Grid B, you eliminate it from the rest of that row in Grid B as well — a cross-grid locked candidate.
我應該在困難的 Cube Sudoku 中使用鉛筆標記嗎?
是的,而且你需要一個追蹤兩個網格成員資格的系統。用特殊符號標記重疊單元格的候選,指示哪些約束是網格A的約束,哪些是網格B的約束,以及哪些適用於兩者。沒有紀律性的標記,很容易錯過跨網格消除並浪費大量解題時間。
在困難的 Cube Sudoku 中最強大的推論來源是什麼?
共享的3x3宮始終是困難級別中最豐富的推導來源。因為它受到三個宮的約束(在網格A中自己的宮,在網格B中自己的宮,以及間接受到兩個網格周圍宮的約束),它往往在盤面其他部分之前解決。優先處理每個觸及共享區域的推導。
一個困難的立方體數獨解題需要多長時間?
預計40到70分鐘用於困難的立方體數獨謎題。更大的棋盤和雙網格限制意味著每一步都需要比標準數獨驗證更多規則。如果卡住,回到共享區域並檢查是否有任何跨網格鎖定候選數被遺漏。

還有問題?請參閱完整 立方體數獨指南.