Expert Onregelmatig Sudoku
Jigsaw-vormige regio's vervangen de 3×3-blokken. Rijen, kolommen en onregelmatige regio's moeten elk 1–9 bevatten. Geen download, geen inloggen.
Expert Irregular Sudoku. De moeilijkste legpuzzels op de site — elke plaatsing vereist multi-beperking redenering over regio's, rijen en kolommen. Niet raden.
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Wat is Jigsaw Sudoku?
Moeilijkheidsgraad
★★★☆☆
3/5
Beperkingstype
Onregelmatige Regio's
Typische Gegeven Cijfers
24–30
Gem. Oplossing (Expert)
60 min
Oplostechnieken voor Expert Niveau
| Techniek | Beschrijving | Niveau |
|---|---|---|
| Region Identification First | Identify all 9 irregular regions by their colour coding before solving. Region membership determines the third constraint unit for each cell. | Beginner |
| Region Counting | Each region must contain 1–9. Counting completed rows and columns reveals how many of each digit can still fit in each region. | Gemiddeld |
| Region–Row/Column Intersection | If a digit within a region is confined to one row or column, eliminate it from the rest of that row or column. | Gemiddeld |
| Irregular Naked Subsets | Apply naked pairs and triples within each irregular region exactly as you would within standard 3×3 boxes. | Gevorderd |
Technieken om te beheersen op Expert
- X-Wing-techniek — Expert jigsaw grids exploit the law-of-leftovers along region borders; once line logic stalls, fall back to X-Wings on rows and columns, which ignore region shapes entirely.
- Swordfish technique — Because regions can't be trusted to behave like boxes, expert jigsaw endgames lean on pure line-based fish — a Swordfish here needs no region reasoning at all.
Gemiddelde Oplossingstijd per Moeilijkheidsgraad
Gemakkelijk
7 min
Gemiddeld
16 min
Moeilijk
32 min
Expert
60 min
Wil je een volledige uitleg van regels, strategieën en oplossingsstappen?
Hoe Jigsaw Sudoku te spelen →
Gerelateerde Varianten
Irregular Diagonal Sudoku
Your jigsaw region-reading skills plus two diagonal houses — the natural step up in constraint density.
Chaos Constructie
Jigsaw solving where the regions themselves are hidden — you deduce the borders while you place the digits.
Samurai Sudoku
Scales the geometry challenge a different way: five overlapping grids whose shared boxes pass information between them.
Veelgestelde Vragen — Expert Onregelmatige Sudoku
Meer vragen? Zie de volledige Irregular Sudoku-gids.