Sukar Arrow Sudoku
Digit di sepanjang setiap anak panah mesti berjumlah nombor dalam bulatan. Anak panah dan peraturan Sudoku klasik digabungkan untuk logik tulen.
Sukar Arrow Sudoku. Anak panah panjang dengan banyak kemungkinan kombinasi memerlukan penghitungan penuh dan rujuk silang berhati-hati dengan kekangan Sudoku piawai.
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
Apakah Arrow Sudoku?
Kesukaran
★★★★☆
4/5
Jenis Kekangan
Kekangan Garis
Biasa Diberi
20–26
Purata Selesaikan (Sukar)
50 min
Teknik Penyelesaian untuk Tahap Sukar
| Teknik | Penerangan | Tahap |
|---|---|---|
| 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. | Pemula |
| 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. | Pertengahan |
| 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. | Pemula |
| Arrow–Region Interaction | Arrow cells sharing a box or row with the circle create indirect constraints — combine the sum equation with standard Sudoku uniqueness. | Pertengahan |
| Repeating Digits on Arrows | Arrow shaft cells can repeat digits (unlike Killer cages). Factor this in when enumerating possible sums. | Lanjutan |
Bersedia untuk ujian muktamad? Cuba Pakar Arrow Sudoku — teka-teki paling sukar di Jom Main Sudoku.
Teknik untuk Dikuasai pada Sukar
- 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.
- Teknik X-Wing — 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.
Purata Masa Selesaikan mengikut Kesukaran
Mudah
12 min
Sederhana
25 min
Sukar
50 min
Pakar
80 min
Nak panduan lengkap peraturan, strategi, dan langkah penyelesaian?
Cara Bermain Arrow Sudoku →
Varian Berkaitan
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.
Sudoku Renban
Trades arithmetic for set logic on the same drawn-line canvas: line digits must form a consecutive run.
Soalan Lazim — Sukar Sudoku Anak Panah
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