Comment jouer à Thermo Sudoku
Les chiffres doivent strictement augmenter le long des formes de thermomètre
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.
Thermo Sudoku superpose des formes de thermomètre sur la grille. Chaque thermomètre a un bulb (cercle) à une extrémité et un tip à l'autre. Les digits le long de tout thermomètre doivent strictement augmenter du bulb au tip. Combiné avec les contraintes standard du Sudoku, cela crée de puissantes chaînes de déductions — sachant que le bulb est au moins 1 et le tip au plus 9, vous pouvez calculer la plage de valeurs valides pour chaque cell sur le thermomètre en fonction de sa position.
Pour savoir d'où vient ce puzzle, comment il se compare aux variantes apparentées et un résumé de stratégie, consultez notre Thermo Sudoku aperçu des variantes.
En un coup d'œil
Comment résoudre Thermo Sudoku
Questions courantes
Qu'est-ce que Thermo Sudoku ? ▾
Thermo Sudoku is a variant where thermometer shapes are drawn on the grid. Each thermometer has a bulb (rounded end) and extends through several cells toward a tip. The digits must strictly increase from the bulb to the tip — so every cell along a thermometer must hold a larger digit than the one before it.
Comment lire les indices du thermomètre ? ▾
The bulb is the starting point and must hold the smallest digit on that thermometer. Each subsequent cell must be strictly larger. For example, a 3-cell thermometer starting at the bulb means the bulb holds at most 7 (since two larger digits must follow). A 5-cell thermometer means the bulb holds at most 5.
Can digits repeat on a thermometer? ▾
No. Because digits must strictly increase, no digit can appear twice on the same thermometer. A 4-cell thermometer uses four different increasing digits. Combined with standard Sudoku uniqueness rules, thermometers create very tight constraints on every cell they pass through.
Is Thermo Sudoku hard to learn? ▾
The core rule is simple — digits increase from bulb to tip. Beginners can start solving after understanding just that one constraint. What makes higher difficulties challenging is tracking minimum and maximum values for each thermometer cell simultaneously across many overlapping thermometers.
What is the best first move in Thermo Sudoku? ▾
Look for long thermometers. A 7-cell thermometer can only start at 1 and end at 7, 8, or 9 — drastically limiting all seven cells. Also check for thermometers where the bulb or tip overlaps with a constrained row, column, or box, as this often pins the starting digit immediately.
How long does Thermo Sudoku take to solve? ▾
Easy puzzles take 8–15 minutes. Medium puzzles typically run 15–30 minutes. Hard puzzles average 35–60 minutes and expert puzzles can exceed 90 minutes. The difficulty scales sharply as thermometer lengths decrease and the number of simultaneously active constraints increases.