如何遊玩 立方體 / 3D數獨
數獨排列在立方體或其他3D佈局的面上的形式
規則
適用標準數獨規則： 填滿每一行、列和3×3宮，數字1–9各出現一次。
3D Sudoku 變體將 Sudoku 網格排列在三維配置中——通常是在立方體的六個面上，相鄰的面共享邊緣行或列。解答必須在每個面上獨立滿足 Sudoku 規則，同時也要滿足共享邊緣的約束。這創造了一種壯觀的視覺謎題格式，具有獨特的跨面邏輯。
如需了解此謎題的來源、與相關變體的比較及策略摘要，請參閱我們的 立方體 / 3D數獨變體概述.
一覽
如何解 立方體 / 3D數獨
常見問題
什麼是 Cube Sudoku (3D Sudoku)？ ▾
Cube Sudoku (also called 3D Sudoku or Tridoku) consists of two 9×9 Sudoku grids that share a common 3×3 box at their overlapping corner. Both grids must independently satisfy all standard Sudoku rules, and the shared corner box must simultaneously satisfy both grids' box constraint.
How does the shared box work? ▾
The shared corner box is part of both grids. Any digit placed in that box counts toward the uniqueness constraint for both grids simultaneously. This means solving either grid's corner directly constrains the other grid's corner — the two grids communicate only through this shared zone.
Do both grids use the same digits? ▾
Yes. Both grids use the digits 1–9, and both follow standard Sudoku rules independently. The shared box makes the two grids interdependent. A digit placed in the shared box cannot repeat in any row, column, or box of either grid.
Is Cube Sudoku harder than regular Sudoku? ▾
It is roughly twice as much work as a single Sudoku, plus the added challenge of managing the shared corner. Easy Cube puzzles are accessible for experienced Sudoku players. Hard and expert puzzles require actively exploiting the cross-grid constraint, which adds genuine complexity beyond simply solving two independent grids.
What is the best strategy for Cube Sudoku? ▾
Alternate between the two grids rather than solving one completely before the other. Whenever you make progress in the shared corner box, immediately check what that means for the other grid. The shared box is the key to unlocking both grids — maximise information flow through it.
How long does Cube Sudoku take to solve? ▾
Easy puzzles take 15–30 minutes. Medium puzzles run 30–50 minutes. Hard and expert puzzles can take 60–120 minutes. The scale (two full grids) is the primary driver of solve time.