Comment jouer à German Whispers
Les chiffres adjacents sur la ligne verte doivent différer d'au moins 5
Les règles
Les règles standard du Sudoku s'appliquent : remplissez chaque ligne, colonne et bloc 3×3 avec les chiffres 1–9, chacun apparaissant exactement une fois.
German Whispers (également connu sous le nom de Whisper Sudoku) dessine des lignes vertes sur la grille. Deux chiffres adjacents sur la ligne doivent différer d'au moins 5. Parce que la différence minimale est de 5 et que les chiffres vont de 1 à 9, cela crée un fort motif alterné haut-bas : si une cellule est basse (1–4), la suivante doit être haute (6–9) et vice versa. La contrainte de ligne élimine le 5 comme chiffre valide dans la plupart des positions.
Pour savoir d'où vient ce puzzle, comment il se compare aux variantes apparentées et un résumé de stratégie, consultez notre German Whispers aperçu des variantes.
En un coup d'œil
Comment résoudre German Whispers
Questions courantes
Qu'est-ce que German Whispers Sudoku ? ▾
German Whispers Sudoku is a variant where green lines are drawn across the grid. Any two cells adjacent along a green line must contain digits that differ by at least 5. Standard Sudoku rules apply — every row, column, and 3×3 box must contain 1–9 exactly once.
Why is it called German Whispers? ▾
The name comes from the puzzle community and refers to a variant popularised in German puzzle circles, with 'whispers' evoking the idea of information passing along a line with a significant minimum separation at each step.
What digits can sit next to each other on a whisper line? ▾
Only pairs with a difference of 5 or more: 1&6, 1&7, 1&8, 1&9, 2&7, 2&8, 2&9, 3&8, 3&9, 4&9. This means whisper cells must alternate between the low group (1–4) and high group (6–9). Digit 5 cannot appear on any whisper line.
What is the best first move in German Whispers Sudoku? ▾
Identify the longest whisper lines and mark each cell as low (1–4) or high (6–9) based on alternation. Any whisper cell in a row, column, or box where the low or high group is almost fully placed gives you a direct elimination or placement.
Is German Whispers Sudoku hard to learn? ▾
The constraint is simple to understand but its consequences take practice to apply automatically. The forced high-low alternation is the key insight — once you internalise it, you can immediately split each line cell into one of two groups and halve your candidate list from the start.
How long does German Whispers Sudoku take to solve? ▾
Easy puzzles take 8–18 minutes. Medium puzzles run 18–35 minutes. Hard and expert puzzles can take 45 minutes to well over an hour. Longer whisper lines spanning the full grid are the most time-consuming because they interact with almost every row, column, and box simultaneously.