非連続 Sudoku
4
8
5
2
7
6
7
1
9
8
2
6
8
7
2
6
6
7
2
1
8
5
4
9
7
1
5
8
7
4
9
2
8
7
7
6
4
2
ノンコンセクティブ数独の遊び方
標準数独ルールが適用されます。追加ルール: 直交隣接するセル（辺を共有）は連続した数字を含んではなりません。セルが5の場合、4つの隣接セルすべてが4と6を避けなければなりません。
完全ガイド →
orthogonally adjacent cellsの2つはconsecutive digitsを含んではならない
非連続 Sudokuとは？
非連続数独はグローバルな制約を課します: 辺を共有する（直交隣接する）2つのセルは連続した数字を含むことができません。したがって、セルが5を含む場合、そのすべての隣接セルは4と6を避けなければなりません。この単一のルールは候補の配置を劇的に制限し、標準的な与えられた数字の数を減らしながらも一意に解けるパズルを生成することができます。
概要
| 制約タイプ | アンチ制約 |
| 典型的な初期数字 | 18–24 |
| 難易度評価 | ★★★☆☆ 3/5 |
| 平均解答時間 — 簡単 | 5分 |
| 平均解答時間 — ミディアム | 13分 |
| 平均解答時間 — 難しい | 26分 |
| 平均解答時間 — エキスパート | 48分 |
非連続 Sudoku の解き方
| テクニック | それが何をするか | レベル |
|---|---|---|
| Global Candidate Pruning | For every filled cell, remove its ±1 neighbours from all orthogonally adjacent cells immediately. | 上級 |
| Digit 5 is Most Constrained | 5 cannot be adjacent to 4 or 6. Use this to restrict placement of 5 across the entire grid. | 上級 |
| Chain Propagation | Placing a digit propagates constraints along rows and columns, often triggering a cascade of forced placements. | 上級 |
| Forbidden Pair Maps | Build a map of forbidden digit pairs for each adjacent pair of cells and use it to eliminate candidates systematically. | 上級 |
平均解答時間
簡単
5分
ミディアム
13分
難しい
26分
エキスパート
48分
よくある質問
Non-Consecutive Sudokuとは何ですか？
Non-Consecutive Sudoku is a variant where no two horizontally or vertically adjacent cells may contain consecutive digits. There are no markers on the grid — the non-consecutive rule applies globally to every pair of neighbours. Standard Sudoku rules also apply.
How does the global non-consecutive rule constrain the grid?
Every pair of adjacent cells cannot differ by exactly 1. This means you cannot place a 4 next to a 3 or a 5. For every digit you place, you must eliminate that digit ±1 from all orthogonal neighbours. This propagates eliminations across the entire board immediately after every placement.
Which digits are most affected by the non-consecutive rule?
Digits 1 and 9 can only be invalid next to 2 and 8 respectively — so they are least affected. Digit 5 cannot be adjacent to either 4 or 6, which is a moderate restriction. Digits 4, 5, and 6 are most affected because they are adjacent to two common digit pairs simultaneously.
非連続数独は通常の数独より難しいですか？
Yes, typically. The global constraint eliminates many more candidates than standard rules alone. Easy puzzles are accessible and resolve quickly. Hard and expert puzzles compensate with fewer given digits, making the non-consecutive constraint the primary source of all deductions.
What is the best first strategy for Non-Consecutive Sudoku?
After placing each digit, immediately mark all orthogonal neighbours as unable to hold ±1. Scan rows and columns for digits that can now only go in one cell due to these combined eliminations. Digit 5 is particularly useful as a placement anchor — wherever 5 is placed, both 4 and 6 are eliminated from all four neighbours.
How long does Non-Consecutive Sudoku take to solve?
Easy puzzles take 5–15 minutes. Medium puzzles run 15–30 minutes. Hard puzzles average 30–55 minutes and expert puzzles can take 60–90 minutes. Non-Consecutive Sudoku rewards players who apply the constraint globally and systematically after every move.