Chaos Construction Sudoku
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Des bordures épaisses séparent différentes régions. Déduisez les 9 régions en résolvant.
Erreurs
0/3
Score
-
Temps
00:00
Progrès0%
Facile · Chaos Construction
Changez la difficulté ci-dessus ↑
Comment jouer au Chaos Construction
Les règles standard de ligne et de colonne s'appliquent. Neuf régions irrégulières (séparées par des bordures épaisses) doivent également chacune contenir 1–9. Contrairement au Jigsaw Sudoku, aucune couleur ne distingue les régions — vous devez déduire quelles cellules forment chaque région à partir des lignes de bordure et des contraintes de chiffres.
Guide complet →
Vous devez déterminer les limites des régions dans le cadre de la résolution
Chaos Construction Facile
Chaos Construction Moyen
Chaos Construction Difficile
Chaos Construction Expert
Qu'est-ce que Chaos Construction ?
Le Sudoku Chaos Construction ne vous donne aucune région prédéfinie. Au lieu de cela, vous devez déduire à la fois les placements des chiffres ET où se trouvent les neuf régions de 9 cellules, tout en satisfaisant toutes les règles standard de lignes et de colonnes du Sudoku. C'est la variante de Sudoku la plus ouverte — le puzzle définit suffisamment de contraintes (souvent par des lignes ou d'autres règles) pour déterminer de manière unique à la fois la grille et la structure des régions.
En un coup d'œil
| Type de contrainte | Hidden Irregular Regions |
| Indices typiques | 24–32 |
| Évaluation de la difficulté | ★★★★☆ 4/5 |
| Temps de résolution moyen — Facile | 12 min |
| Temps de résolution moyen — Moyen | 26 min |
| Temps de résolution moyen — Difficile | 50 min |
| Temps de résolution moyen — Expert | 80 min |
Comment résoudre Chaos Construction
| Technique | Ce qu'il fait | Niveau |
|---|---|---|
| Border Reading | Thick borders separate cells in different regions. Cells without thick borders between them are in the same region. Map connected groups first. | Avancé |
| Region Size Counting | Each region contains exactly 9 cells. Count connected groups to verify region membership and identify boundaries. | Avancé |
| Deducing Regions from Digits | If standard row/column logic places a digit, use that placement to confirm or deny region membership — a region can only contain each digit once. | Avancé |
| Region Pointer Pairs | If a digit in a deduced region is confined to one row or column, eliminate it from that entire row or column. | Avancé |
| Construction and Solving Together | Alternate between deducing region structure and placing digits — each informs the other in a co-dependent process. | Avancé |
Temps de résolution moyens
Facile
12 min
Moyen
26 min
Difficile
50 min
Expert
80 min
Foire aux questions
Qu'est-ce que Chaos Construction Sudoku ?
Chaos Construction Sudoku (also called Uncoloured Irregular Sudoku) is a variant where the nine irregular regions are not shown at the start. Instead, only thick border segments are given — you must deduce the boundaries of the nine regions as part of solving the puzzle. Once you determine a region, it must contain 1–9 exactly once.
How do I find the hidden regions?
Thick line segments between cells mark regional boundaries. By following these boundaries and counting cells, you can begin to infer where each region begins and ends. A complete region always contains exactly nine cells. Cross-referencing digit placement constraints with possible region shapes is the core meta-solving step.
Do Sudoku rules still apply?
Yes. Every row, column, and the nine hidden irregular regions must each contain 1–9 exactly once. The regions are standard in size (9 cells each) and follow all the same rules as Irregular Sudoku — the only difference is that you must deduce the region boundaries as you go.
Is Chaos Construction Sudoku very hard?
It is among the most challenging Sudoku variants. The region deduction layer adds significant complexity on top of standard Sudoku logic. Expert Chaos Construction puzzles are considered some of the hardest logic puzzles available. Even easy difficulty requires more concentration than most other variants.
Where do I start in Chaos Construction Sudoku?
Begin at corners and edges — border segments there are most constrained. Count cells along each segment to identify which regions are smallest and most bounded. Once you confirm a single full region, the digit constraints it introduces often help you trace the adjacent region boundaries.
How long does Chaos Construction Sudoku take to solve?
Easy puzzles take 20–40 minutes. Medium puzzles run 40–75 minutes. Hard and expert puzzles can take well over 2 hours. The region deduction phase alone often takes longer than solving a complete standard Sudoku.