Expert Diagonal Sudoku
Båda huvuddiagonalerna måste också innehålla 1–9 utan upprepning. Fyra enheter istället för tre — dubbel begränsningstäthet.
Expert Diagonal Sudoku. De svåraste pusslen på sidan — fem begränsningsgrupper per cell med mycket få givna. Varje placering följer från precis logik. Ingen gissning.
6
3
1
7
4
3
8
2
4
3
7
9
4
5
1
8
5
4
7
1
6
6
9
7
4
9
1
Vad är Diagonal Sudoku?
Svårighetsgrad
★★☆☆☆
2/5
Begränsningstyp
Extra regioner
Typiska givna
22–28
Genomsnittlig lösning (Expert)
40 min
Lösningstekniker för Expert nivå
| Teknik | Beskrivning | Nivå |
|---|---|---|
| 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. | Nybörjare |
| Diagonal–Box Interaction | When a digit on a diagonal is confined to one box segment, eliminate it from the rest of that box. | Medel |
| Diagonal Naked Pairs | If two cells on a diagonal share the same two candidates, eliminate those values from all other diagonal cells. | Medel |
| Three-Unit Intersection | A cell on the main diagonal also belongs to a row, column, and box — four constraint units simultaneously — maximising elimination power. | Avancerad |
Tekniker att bemästra vid Expert
- X-Wing-teknik — Expert diagonal grids hide X-Wings whose only useful eliminations land on the diagonals — re-scan both diagonals after every fish you complete.
- Swordfish technique — A Swordfish with corners near r1c1, r5c5, or r9c9 cascades its column eliminations into the diagonal houses; expert puzzles here are built around exactly this interaction.
Genomsnittlig lösningstid efter svårighetsgrad
Lätt
4 min
Medel
10 min
Svår
20 min
Expert
40 min
Vill du ha en fullständig genomgång av regler, strategier och lösningssteg?
Hur man spelar Diagonal Sudoku →
Relaterade 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.
Vanliga frågor – Expert Diagonal Sudoku
Fler frågor? Se hela Diagonal Sudoku-guide.