Svær Arrow Sudoku
Tal langs hver pil skal summere til tallet i cirklen. Pile og klassiske Sudoku-regler kombineres for ren logik.
Svær Pil Sudoku. Lange pile med mange mulige kombinationer kræver fuld opremsning og omhyggelig krydsreference med standard Sudoku-begrænsninger.
6
5
9
2
3
8
6
7
8
3
5
6
8
2
2
9
5
6
7
2
9
1
5
9
6
1
5
Hvad er Pil Sudoku?
Sværhedsgrad
★★★★☆
4/5
Begrænsningstype
Linjebegrænsninger
Typiske Givne Tal
20–26
Gns. Løsning (Svær)
50 min
Løsningsteknikker for Svær niveau
| Teknik | Beskrivelse | Niveau |
|---|---|---|
| Arrow Sum Bounding | The circle digit equals the sum of all arrow shaft cells. A 3-cell arrow with circle 5 means the three shaft cells average under 2 — severely constraining options. | Begynder |
| Max/Min Arrow Analysis | The maximum sum of N cells is 9+8+7+…; the minimum is 1+2+3+…. If the circle digit falls outside these bounds, a constraint error exists. | Mellemniveau |
| Bifurcation on Short Arrows | For 2-cell arrows with a small circle (e.g., 3), only (1,2) or (2,1) works — enumerate cases to find forced placements quickly. | Begynder |
| Arrow–Region Interaction | Arrow cells sharing a box or row with the circle create indirect constraints — combine the sum equation with standard Sudoku uniqueness. | Mellemniveau |
| Repeating Digits on Arrows | Arrow shaft cells can repeat digits (unlike Killer cages). Factor this in when enumerating possible sums. | Avanceret |
Klar til den ultimative test? Prøv Ekspert Pil Sudoku — de sværeste puslespil på Spil Sudoku.
Teknikker at mestre på Svær
- Hidden Pairs technique — Sum arithmetic strips middle candidates from shaft cells until two digits hide in two cells of a box — recount boxes crossed by long arrows after every sum deduction.
- X-Wing-teknik — Arrows pin 9s into circles and out of shafts, so the digit 9's candidate map is the thinnest on the grid — that's where hard arrow X-Wings live.
Gennemsnitlig Løsningstid efter Sværhedsgrad
Let
12 min
Mellem
25 min
Svær
50 min
Ekspert
80 min
Vil du have en fuld gennemgang af regler, strategier og løsningstrin?
Sådan spiller du Pil Sudoku →
Relaterede varianter
Thermo Sudoku
Arrows demand sums along a line; thermometers demand growth along one — both reward tracking minimums and maximums cell by cell.
Killer Sudoku
The cage-based cousin of arrow arithmetic, adding a no-repeat rule and the powerful 45 trick to your sum toolkit.
Renban Sudoku
Trades arithmetic for set logic on the same drawn-line canvas: line digits must form a consecutive run.
Ofte stillede spørgsmål — Svær Pil Sudoku
Flere spørgsmål? Se den fulde Pil Sudoku guide.