Svær Diagonal Sudoku
Begge hoveddiagonaler må også indeholde 1–9 uden gentagelse. Fire enheder i stedet for tre — dobbelt så tæt begrænsning.
Svær Diagonal Sudoku. Diagonal X-Wings, multi-begrænsnings boksintersektioner og dybe elimineringskæder — blyantsmarkeringer er essentielle.
9
5
3
7
6
5
3
4
7
9
6
3
4
7
1
7
5
4
2
9
4
1
6
2
6
9
5
Hvad er Diagonal Sudoku?
Sværhedsgrad
★★☆☆☆
2/5
Begrænsningstype
Ekstra regioner
Typiske Givne Tal
22–28
Gns. Løsning (Svær)
20 min
Løsningsteknikker for Svær niveau
| Teknik | Beskrivelse | Niveau |
|---|---|---|
| Diagonal as a Unit | Treat each diagonal exactly like a row or column — every digit 1–9 appears exactly once. Standard scanning and counting apply. | Begynder |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | Mellemniveau |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | Mellemniveau |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | Avanceret |
Klar til den ultimative test? Prøv Ekspert Diagonal Sudoku — de sværeste puslespil på Spil Sudoku.
Teknikker at mestre på Svær
- Hidden Pairs technique — With four houses squeezing every diagonal cell, two digits frequently get cornered into the same two cells of a diagonal — check both diagonals for hidden pairs first.
- X-Wing-teknik — An X-Wing whose corner lands on a main diagonal also strips that digit from the rest of the diagonal, turning a two-column elimination into a three-house sweep.
Gennemsnitlig Løsningstid efter Sværhedsgrad
Let
4 min
Mellem
10 min
Svær
20 min
Ekspert
40 min
Vil du have en fuld gennemgang af regler, strategier og løsningstrin?
Sådan spiller du Diagonal Sudoku →
Relaterede varianter
Irregular Diagonal Sudoku
Keeps both diagonal houses you've learned to scan and adds jigsaw regions for an even denser constraint web.
Hyper Sudoku
The same extra-region idea — four shaded windows instead of two diagonals — so your habit of scanning bonus houses transfers directly.
Jigsaw Sudoku
If you enjoy adapting your scan to new house shapes, jigsaw regions stretch that skill further than straight diagonal lines.
Ofte stillede spørgsmål — Svær Diagonal Sudoku
Flere spørgsmål? Se den fulde Diagonal Sudoku guide.