Expert Irregular Diagonal Sudoku
Régions Jigsaw plus deux contraintes diagonales — chaque chiffre 1–9 doit apparaître une fois dans chaque ligne, colonne, région et diagonale. Gratuit.
Expert Sudoku Diagonal Irrégulier. Les puzzles à variantes combinées les plus difficiles du site — chaque étape enchaîne la logique diagonale, de région, de ligne et de colonne simultanément.
9
2
8
7
1
4
9
3
2
6
1
6
4
1
2
7
5
6
7
4
8
9
2
1
7
8
Qu'est-ce que Sudoku Diagonal Irrégulier ?
Difficulté
★★★★☆
4/5
Type de contrainte
Combined: Irregular + Diagonal
Indices typiques
22–30
Moy. Résolution (Expert)
65 min
Techniques de résolution pour le niveau Expert
| Technique | Description | Niveau |
|---|---|---|
| Map All 29 Units First | You have 9 rows + 9 columns + 9 irregular regions + 2 diagonals = 29 constraint units. Identify all irregular regions and both diagonals before starting. | Débutant |
| Diagonal–Region Intersection | Cells on a diagonal that also sit in the same irregular region create a powerful two-unit intersection — use both constraints simultaneously. | Intermédiaire |
| Diagonal Pointing Pairs | If a digit on a diagonal is confined to one irregular region, eliminate it from all other cells of that region. | Intermédiaire |
| Region Coloring for Diagonals | Trace which irregular regions each diagonal passes through. Regions with many diagonal cells are the most constrained. | Avancé |
| Chain Deduction Across Units | With 29 units, a forced digit in one unit often cascades through 3–4 other units. Track chains carefully to avoid errors. | Avancé |
Techniques à maîtriser au niveau Expert
- Technique X-Wing — Expert grids in this combined variant stall region logic deliberately — fall back to line-based fish, then re-run diagonal and region scans after each elimination.
- Swordfish technique — A Swordfish whose columns cross both diagonals propagates into the densest cells of the grid — expert irregular-diagonal endgames are sequenced around this cascade.
Temps de résolution moyen par difficulté
Facile
8 min
Moyen
18 min
Difficile
35 min
Expert
65 min
Envie d'un guide complet des règles, stratégies et étapes de résolution ?
Comment jouer à Sudoku Diagonal Irrégulier →
Variantes connexes
Diagonal Sudoku
Isolates the diagonal half of this variant — practise the two extra houses on a familiar 3×3 box layout.
Sudoku Jigsaw
Isolates the jigsaw half — pure region-shape reading without the diagonal bookkeeping.
Chaos Construction
If 29 visible houses feel comfortable, try deducing the nine jigsaw regions yourself as part of the solve.
Foire aux questions — Expert Sudoku Diagonal Irrégulier
Plus de questions ? Voir la Guide du Sudoku Diagonal Irrégulier.