Difficile Little Killer Sudoku
Les indices à l'extérieur de la grille donnent des sommes diagonales — les chiffres peuvent se répéter le long de la flèche. Combinez l'énumération diagonale avec la logique classique du Sudoku. Gratuit en ligne.
Difficile Sudoku Little Killer. Moins de données, diagonales plus serrées — attendez-vous à des déductions en plusieurs étapes et à une marque de crayon travail.
Qu'est-ce que Sudoku Little Killer ?
Techniques de résolution pour le niveau Difficile
| Technique | Description | Niveau |
|---|---|---|
| Diagonal Enumeration | For each clue, enumerate all combinations of N digits (allowing repeats, 1–9) that sum to the clue value. | Débutant |
| Repeating Digits Allowed | Unlike Killer cages, Little Killer diagonals can repeat digits as long as standard row/column/box uniqueness is preserved. | Débutant |
| Short Diagonal Logic | A 1-cell diagonal directly gives that cell's digit. A 2-cell diagonal with clue C has limited pairs — enumerate them immediately. | Intermédiaire |
| Cross-Diagonal Intersection | When two diagonals share a cell, the shared cell must satisfy both sum constraints simultaneously. | Avancé |
| Row/Column Interaction | A diagonal cell belongs to a row, column, and box — combine Little Killer sum constraints with standard uniqueness rules. | Intermédiaire |
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Techniques à maîtriser au niveau Difficile
- Hidden Pairs technique — Where two clue diagonals cross, the shared cell must satisfy both sums — the arithmetic squeezes neighbouring cells until pairs hide in the corners of crossed boxes.
- Technique X-Wing — Long diagonal sums near the minimum flood the diagonal with small digits, pushing 8 and 9 into few legal cells per row — hard Little Killer fish swim on the high digits.
Temps de résolution moyen par difficulté
Variantes connexes
The cage version of the same idea: sum clues with a no-repeat rule that makes the arithmetic tighter than on diagonals.
Also driven entirely by numbers written outside the grid — sums between the 1 and 9 instead of along diagonals.
Another outside-clue variant, replacing diagonal sums with visibility counts read from the grid's edges.
Foire aux questions — Difficile Sudoku Little Killer
Plus de questions ? Voir la Guide du Sudoku Little Killer.