Anti-Consecutive Sudoku
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Punktzahl
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Einfach · Anti-konsekutiv-Sudoku
Schwierigkeit oben wechseln ↑
Spielanleitung für Anti-Consecutive Sudoku
Standard-Sudoku-Regeln gelten. Zusätzliche Regel: Keine zwei orthogonal benachbarten Zellen (eine Kante teilend) dürfen aufeinanderfolgende Ziffern enthalten. Wenn eine Zelle 5 enthält, müssen alle vier Nachbarn 4 und 6 vermeiden.
Vollständiger Leitfaden →
Orthogonal benachbarte Zellen dürfen keine aufeinanderfolgenden Ziffern enthalten
Anti-Consecutive Sudoku Einfach
Anti-Consecutive Sudoku Mittel
Anti-Consecutive Sudoku Schwer
Anti-Consecutive Sudoku Experte
Was ist Anti-Consecutive Sudoku?
Anti-Konsekutiv-Sudoku (eine strengere Form des Nicht-Konsekutiv-Sudokus) erlegt die Regel auf, dass keine zwei orthogonal benachbarten Zellen aufeinanderfolgende ganze Zahlen enthalten dürfen. Diese Variante erfordert oft weniger vorgegebene Ziffern, da die Einschränkung allein so viele Kandidatenpaare eliminiert. Sie wird manchmal mit Anti-King oder Anti-Springer kombiniert, um extrem eingeschränkte Rätsel zu erstellen.
Auf einen Blick
| Constraint-Typ | Anti-Einschränkungen |
| Typische Vorgaben | 18–24 |
| Schwierigkeitsbewertung | ★★★☆☆ 3/5 |
| Durchschn. Lösungszeit — Einfach | 5 Min. |
| Durchschn. Lösungszeit — Mittel | 13 Min. |
| Durchschn. Lösungszeit — Schwer | 26 Min. |
| Durchschn. Lösungszeit — Experte | 48 Min. |
Lösungsanleitung für Anti-Consecutive Sudoku
| Technik | Was es tut | Level |
|---|---|---|
| Global Candidate Pruning | For every filled cell, remove its ±1 neighbours from all orthogonally adjacent cells immediately. | Fortgeschritten |
| Digit 5 is Most Constrained | 5 cannot be adjacent to 4 or 6. Use this to restrict placement of 5 across the entire grid. | Fortgeschritten |
| Chain Propagation | Placing a digit propagates constraints along rows and columns, often triggering a cascade of forced placements. | Fortgeschritten |
| Forbidden Pair Maps | Build a map of forbidden digit pairs for each adjacent pair of cells and use it to eliminate candidates systematically. | Fortgeschritten |
Durchschnittliche Lösungszeiten
Einfach
5 Min.
Mittel
13 Min.
Schwer
26 Min.
Experte
48 Min.
Häufig gestellte Fragen
Was ist Anti-Consecutive Sudoku?
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?
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.