Expert Thermo Sudoku
Les chiffres doivent augmenter de l'extrémité du bulbe à la pointe le long de chaque thermomètre. La direction de la température contraint chaque placement.
Expert Thermo Sudoku. Les puzzles de thermomètre les plus difficiles du site — chaque placement découle de calculs de bornes précis et d'un raisonnement logique.
2
4
3
7
2
6
1
9
4
5
1
3
1
8
5
6
3
6
9
3
8
7
9
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2
Qu'est-ce que Thermo Sudoku ?
Difficulté
★★★★☆
4/5
Type de contrainte
Contraintes de ligne
Indices typiques
20–28
Moy. Résolution (Expert)
75 min
Techniques de résolution pour le niveau Expert
| Technique | Description | Niveau |
|---|---|---|
| Range Restriction from Length | A thermometer with N cells must use N strictly increasing distinct values. The bulb is at least 1 and the tip is at most 9, giving a calculable valid range for each cell. | Débutant |
| Minimum/Maximum Bounding | The bulb value is ≤ 9 − (N − 1). The tip value is ≥ N. Apply these bounds immediately to prune all thermometer candidates. | Débutant |
| Overlapping Thermometer Deduction | Two thermometers sharing a cell give tighter combined bounds than either alone. | Intermédiaire |
| Forcing Chains via Thermometers | When a value is forced into a thermometer cell, all cells closer to the bulb must be smaller and all closer to the tip must be larger. | Avancé |
| Short vs. Long Thermometers | A 2-cell thermometer is simply a greater-than relationship. A 9-cell thermometer forces exactly 1–9 in order. | Intermédiaire |
Techniques à maîtriser au niveau Expert
- Technique X-Wing — Expert thermo endgames run on the extremes: thermometers force 8s and 9s away from tips of short lines, leaving textbook two-per-row X-Wing geometry.
- Swordfish technique — When several long thermometers parallel each other, mid-range digits get confined to the same three columns across three rows — exactly the Swordfish setup expert grids exploit.
Temps de résolution moyen par difficulté
Facile
10 min
Moyen
22 min
Difficile
45 min
Expert
75 min
Envie d'un guide complet des règles, stratégies et étapes de résolution ?
Comment jouer à Thermo Sudoku →
Variantes connexes
Arrow Sudoku
Thermo and Arrow both constrain digits along drawn lines — increase swaps for summation, but the cell-by-cell bounding feels the same.
German Whispers
Another drawn-line rule: instead of strictly increasing, neighbouring line digits must differ by at least 5.
Sudoku Renban
Line cells must form a consecutive set rather than an increasing one — the same range-tracking instinct, loosened by one degree.
Foire aux questions — Expert Sudoku Thermo
Plus de questions ? Voir la Guide du Thermo Sudoku.