Arrow Sudoku
5
6
7
9
4
6
7
1
2
5
7
5
4
3
7
8
1
4
4
5
8
3
2
6
2
8
5
7
2
5
1
4
3
7
8
9
5
6
Kesalahan
0/3
Skor
-
Waktu
00:00
Kemajuan0%
Mudah ยท Sudoku Panah
Ganti kesulitan di atas โ
Cara bermain Arrow Sudoku
Aturan standar Sudoku berlaku. Aturan tambahan: digit di sepanjang ekor setiap panah harus berjumlah digit di lingkaran di dasar panah. Lingkaran itu sendiri adalah sel Sudoku normal โ nilainya menentukan jumlah digit sel panah.
Panduan lengkap โ
Digit pada panah harus berjumlah digit di lingkaran
Apa itu Arrow Sudoku?
Arrow Sudoku menempatkan panah pada kisi, masing-masing dimulai dari sel yang dilingkari. Angka-angka di semua sel di sepanjang panah (tidak termasuk lingkaran) harus berjumlah sama dengan angka yang ditempatkan di sel yang dilingkari. Karena angka maksimum adalah 9, panah panjang dengan banyak sel sangat terbatas. Arrow Sudoku sering kali berpadu indah dengan eliminasi standar dan logika kandidat.
Sekilas
| Jenis kendala | Batasan Garis |
| Petunjuk khas | 20โ26 |
| Peringkat kesulitan | โ โ โ โ โ 4/5 |
| Rata-rata waktu pemecahan โ Mudah | 12 mnt |
| Rata-rata waktu pemecahan โ Sedang | 25 mnt |
| Rata-rata waktu pemecahan โ Sulit | 50 mnt |
| Rata-rata waktu pemecahan โ Ahli | 80 mnt |
Cara Memecahkan Arrow Sudoku
| Teknik | Apa yang dilakukannya | Level |
|---|---|---|
| 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 โ severely constraining options. | Lanjutan |
| Max/Min Arrow Analysis | The maximum sum of N cells is 9+8+7+โฆ; the minimum is 1+2+3+โฆ. If the circle digit falls outside these bounds, a constraint error exists. | Lanjutan |
| Bifurcation on Short Arrows | For 2-cell arrows with a small circle (e.g., 3), only (1,2) or (2,1) works โ enumerate cases to find forced placements quickly. | Lanjutan |
| ArrowโRegion Interaction | Arrow cells sharing a box or row with the circle create indirect constraints โ combine the sum equation with standard Sudoku uniqueness. | Lanjutan |
| Repeating Digits on Arrows | Arrow shaft cells can repeat digits (unlike Killer cages). Factor this in when enumerating possible sums. | Lanjutan |
Waktu Pemecahan Rata-rata
Mudah
12 mnt
Sedang
25 mnt
Sulit
50 mnt
Ahli
80 mnt
Pertanyaan yang Sering Diajukan
Apa itu Arrow Sudoku?
Arrow Sudoku is a variant where arrows are drawn across the grid. Every digit placed along an arrow must sum to the number written inside the circle at the arrow's base. Standard Sudoku rules still apply โ every row, column, and 3ร3 box must contain the digits 1โ9 exactly once.
How do the arrows and circles work?
Each arrow starts at a circle and extends through one or more cells. The digit in the circle is the target sum for all cells the arrow passes through. A single-cell arrow tells you the exact digit in that cell. Longer arrows have multiple possible combinations, which you narrow down using Sudoku constraints.
Is Arrow Sudoku harder than regular Sudoku?
It depends on your experience. Arrow Sudoku adds an arithmetic layer on top of standard logic. Easy puzzles are comparable in difficulty to medium classic Sudoku. Hard and expert arrow puzzles require simultaneous constraint-tracking that most players find significantly more challenging than any classic Sudoku difficulty.
Can a digit repeat along an arrow?
No โ digits can repeat on an arrow only if standard Sudoku rules allow it. Because each row, column, and box must contain 1โ9 once, a digit can appear twice on an arrow only if the two cells are in different rows, columns, and boxes. In practice, most arrow cells are highly constrained.
What is the best first move in Arrow Sudoku?
Start with single-cell arrows โ the digit in that cell equals the circle value directly. Then look for short arrows with extreme sums. A 2-cell arrow summing to 3 can only be {1,2}; summing to 17 can only be {8,9}. These give you the tightest starting constraints without any guessing.
How long does Arrow Sudoku take to solve?
Easy puzzles take 5โ15 minutes. Medium puzzles typically run 15โ30 minutes. Hard puzzles average 30โ60 minutes, and expert puzzles can take over an hour even for experienced solvers. Solve times improve quickly once you develop intuition for which arrow combinations are possible at a glance.