Svår Oregelbunden Diagonal Sudoku
Jigsaw-regioner plus två diagonala begränsningar — varje siffra 1–9 måste förekomma en gång i varje rad, kolumn, region och diagonal. Gratis att spela.
Svår Irregular Diagonal Sudoku. Färre givna, komplexa regionformer, och täta diagonala begränsningar — flerstegs pencilmarkering arbete krävs.
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9
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1
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Vad är Irregular Diagonal Sudoku?
Svårighetsgrad
★★★★☆
4/5
Begränsningstyp
Combined: Irregular + Diagonal
Typiska givna
22–30
Genomsnittlig lösning (Svår)
35 min
Lösningstekniker för Svår nivå
| Teknik | Beskrivning | Nivå |
|---|---|---|
| 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. | Nybörjare |
| 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. | Medel |
| Diagonal Pointing Pairs | If a digit on a diagonal is confined to one irregular region, eliminate it from all other cells of that region. | Medel |
| Region Coloring for Diagonals | Trace which irregular regions each diagonal passes through. Regions with many diagonal cells are the most constrained. | Avancerad |
| 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. | Avancerad |
Redo för det ultimata testet? Prova Expert Irregular Diagonal Sudoku — de svåraste pusslen på Spela Sudoku.
Tekniker att bemästra vid Svår
- Hidden Pairs technique — With 29 overlapping houses, candidate counts drop unevenly — recount the diagonal cells after region eliminations, because that's where hard grids hide two digits in two cells.
- X-Wing-teknik — Rows and columns here are classic, so X-Wings work untouched — and any corner that lands on a diagonal exports its elimination into a fourth house.
Genomsnittlig lösningstid efter svårighetsgrad
Lätt
8 min
Medel
18 min
Svår
35 min
Expert
65 min
Vill du ha en fullständig genomgång av regler, strategier och lösningssteg?
Hur man spelar Irregular Diagonal Sudoku →
Relaterade varianter
Diagonal Sudoku
Isolates the diagonal half of this variant — practise the two extra houses on a familiar 3×3 box layout.
Jigsaw Sudoku
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.
Vanliga frågor – Svår Irregular Diagonal Sudoku
Fler frågor? Se hela Irregular Diagonal Sudoku guide.