Expert Anti-King Sudoku
Deux chiffres identiques ne peuvent pas se toucher en diagonale (comme le mouvement d'un roi aux échecs). Chaque cellule a jusqu'à 8 voisins restreints.
Expert Anti-King Sudoku. Chaque placement est forcé par une logique diagonale et standard entrelacée. Les puzzles anti-roi les plus difficiles du site — aucune supposition requise.
3
9
8
2
2
5
1
3
2
9
9
2
6
1
4
6
9
8
7
7
1
5
7
Erreurs
0/3
Score
-
Temps
00:00
Progrès0%
♚ Contrainte de mouvement du roi active
Qu'est-ce que Anti-King Sudoku ?
Difficulté
★★★☆☆
3/5
Type de contrainte
Anti-Contraintes
Indices typiques
22–28
Moy. Résolution (Expert)
48 min
Techniques de résolution pour le niveau Expert
| Technique | Description | Niveau |
|---|---|---|
| Diagonal Exclusion | The king constraint extends the exclusion zone to all 8 neighbours including diagonals. Apply diagonal exclusions before standard row/col/box logic. | Débutant |
| Corner Restriction | Corner cells (e.g., r1c1) only have 3 king-move neighbours. Start with corners and edges to build initial placements. | Intermédiaire |
| King-Chain Elimination | When a digit is placed, eliminate it simultaneously from all 8 surrounding cells. | Intermédiaire |
| Parity via King's Move | In Anti-King, consecutive digits often become mutually king-move incompatible — trace valid placement paths using this property. | Avancé |
Techniques à maîtriser au niveau Expert
- Technique X-Wing — At expert level, combine the fish with king logic: an X-Wing corner placement also clears the digit from eight surrounding cells, often collapsing a whole region.
- Swordfish technique — Expert Anti-King puzzles thin candidates with diagonal pressure until three-row Swordfish patterns become the only path — look for them on digits clustered near the grid centre.
Temps de résolution moyen par difficulté
Facile
5 min
Moyen
13 min
Difficile
26 min
Expert
48 min
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Variantes connexes
Anti-Knight Sudoku
The companion chess constraint — the forbidden repeat jumps a knight's move instead of one diagonal step.
Anti-Consecutive Sudoku
Forbids a value relationship instead of a position: neighbours may touch, but their digits can't be consecutive.
Sudoku Non-Consécutif
Another global anti-rule solved with the same reflex — every placement immediately bans candidates around it.
Foire aux questions — Expert Sudoku Anti-King
Plus de questions ? Voir la Guide Anti-King Sudoku.