アンチコンセクティブ数独 の遊び方
直交隣接セルは連続した数字を含んではならない
ルール
標準の数独ルールが適用されます： すべての行、列、3×3ボックスに数字1～9を、それぞれが1回ずつ現れるように埋めます。
アンチ連続数独（非連続数独のより厳格な形式）は、直交して隣接する2つのセルが連続した整数を含んではならないというルールを課します。このバリアントは、制約だけで多くの候補ペアを排除するため、しばしばより少ない与えられた数字を必要とします。アンチキングやアンチナイトと組み合わせて、非常に制約の多いパズルを作成することがあります。
このパズルの出典、関連バリアントとの比較、戦略の概要については、私たちの アンチコンセクティブ数独バリアント概要.
概要
アンチコンセクティブ数独 の解き方
よくある質問
Anti-Consecutive Sudokuとは何ですか？ ▾
Anti-Consecutive Sudoku is a variant where no two orthogonally adjacent cells (horizontally or vertically neighbouring) may contain consecutive digits. The rule applies everywhere on the grid without any markers. Standard Sudoku rules also apply throughout.
How is Anti-Consecutive different from Non-Consecutive Sudoku? ▾
Anti-Consecutive and Non-Consecutive Sudoku are the same constraint — the name is used interchangeably by different puzzle communities. Both mean: no two horizontally or vertically neighbouring cells may hold digits that differ by exactly 1.
Which digit placements trigger the most eliminations? ▾
Digits in the middle of the range (4, 5, 6) eliminate two consecutive neighbours simultaneously. Placing a 5 removes both 4 and 6 from all four orthogonal neighbours, and placing those 4s and 6s in turn removes 3 and 7 from their neighbours — creating a cascade effect. Starting with central digits often unlocks large portions of the grid.
Is Anti-Consecutive Sudoku accessible for beginners? ▾
The rule is simple and the early eliminations are satisfying and obvious. Easy puzzles are well-suited for Sudoku players who want a step up from classic without learning arithmetic (like Killer or Arrow). The non-consecutive constraint is entirely logic-based.
What is the best approach to Anti-Consecutive Sudoku? ▾
Treat the anti-consecutive constraint as an additional elimination layer. After every digit placement, immediately update all four orthogonal neighbours to remove ±1 from their candidate lists. The more given digits you have to start with, the more these cascade eliminations interact.
How long does Anti-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. Expert puzzles with very few given digits rely entirely on the anti-consecutive constraint for deductions.