如何遊玩 Samurai數獨
五個 overlapping 9×9 grids 共享 corner boxes
規則
標準數獨規則適用： 用數字1–9填滿每一行、列和3×3宮，每個數字恰好出現一次。
武士數獨由五個相互鎖定的9×9網格組成，排列成X形——一個中央網格和四個角落網格，全部共享一個重疊的3×3宮。每個子網格必須獨立滿足標準數獨規則。解開一個子網格常能提供解鎖另一個的線索。完整謎題涵蓋一個21×21的網格。
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 Samurai數獨 變體概述.
一覽
如何解 Samurai數獨
常見問題
乜嘢係Samurai Sudoku？ ▾
Samurai Sudoku is a variant consisting of five overlapping 9×9 Sudoku grids arranged on a 21×21 board. One grid occupies the centre, and four grids are placed at the corners with their inner 3×3 boxes overlapping the centre grid's corner boxes. All five grids must be solved simultaneously.
How do the overlapping boxes work? ▾
Each of the four outer grids shares one 3×3 box with the centre grid. Any digit placed in a shared box satisfies the constraint for both grids simultaneously. This means information flows between grids through the shared boxes — solving one grid's corner often directly advances the centre grid.
Do all five grids have standard Sudoku rules? ▾
Yes. Each of the five 9×9 grids individually follows all standard Sudoku rules: every row, column, and 3×3 box within that grid must contain 1–9 exactly once. The only interaction between grids is through the shared corner boxes.
Is Samurai Sudoku harder than regular Sudoku? ▾
Samurai puzzles take significantly longer than single-grid Sudoku simply due to scale — you're solving five grids. Individual difficulty can range from easy to expert. The cross-grid interactions through shared boxes add a satisfying extra layer that single-grid Sudoku doesn't offer.
What is the best approach to Samurai Sudoku? ▾
Work on all five grids simultaneously rather than trying to complete one before moving to another. When you get stuck on one grid, the shared boxes often provide a breakthrough from a neighbouring grid. Scan all five grids for hidden singles after every placement in any shared box.
How long does Samurai Sudoku take to solve? ▾
Easy puzzles take 25–45 minutes. Medium puzzles run 45–90 minutes. Hard and expert puzzles can take 2–4 hours. The time is primarily driven by scale — five full grids — rather than by individual deduction difficulty.