Comment jouer à Samurai Sudoku
Cinq grilles 9×9 qui se chevauchent partageant des boîtes de coin
Les règles
Les règles standard du Sudoku s'appliquent : remplissez chaque ligne, colonne et bloc 3×3 avec les chiffres 1–9, chacun apparaissant exactement une fois.
Le Samurai Sudoku se compose de cinq grilles 9×9 imbriquées disposées en forme de X — une grille centrale et quatre grilles d'angle, partageant toutes une boîte 3×3 là où elles se chevauchent. Chacune des cinq sous-grilles doit satisfaire indépendamment les règles du Sudoku standard. Résoudre une sous-grille fournit souvent des indices qui en débloquent une autre. Le puzzle complet s'étend sur une grille 21×21.
Pour savoir d'où vient ce puzzle, comment il se compare aux variantes apparentées et un résumé de stratégie, consultez notre Samurai Sudoku aperçu des variantes.
En un coup d'œil
Comment résoudre Samurai Sudoku
Questions courantes
Qu'est-ce que 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.