Sudoku Termo
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Errori
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Punteggio
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Tempo
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Progresso0%
Facile · Thermo Sudoku
Cambia difficoltà sopra ↑
Come giocare a Thermo Sudoku
Si applicano le regole standard del Sudoku. Regola extra: le cifre lungo ogni termometro grigio devono aumentare strettamente dal bulbo (estremità del cerchio) alla punta. Un termo di 3 celle potrebbe essere 2,5,8 o 1,4,9 ma non 3,3,7 o 5,4,8.
Guida completa →
Le cifre devono aumentare strettamente lungo le forme dei termometri
Sudoku Termo Facile
Sudoku Termo Medio
Sudoku Termo Difficile
Sudoku Termo Esperto
Cos'è Sudoku Termo?
Thermo Sudoku sovrappone forme di termometro sulla griglia. Ogni termometro ha un bulbo (cerchio) a un'estremità e una punta all'altra. Le cifre lungo qualsiasi termometro devono aumentare rigorosamente dal bulbo alla punta. Combinato con i vincoli standard del Sudoku, questo crea potenti catene di deduzioni — sapendo che il bulbo è almeno 1 e la punta è al massimo 9, puoi calcolare l'intervallo di valori validi per ogni cella sul termometro in base alla sua posizione.
A Colpo d'Occhio
| Tipo di vincolo | Vincoli di Linea |
| Dati tipici | 20–28 |
| Valutazione della difficoltà | ★★★★☆ 4/5 |
| Tempo medio di risoluzione — Facile | 10 min |
| Tempo medio di risoluzione — Medio | 22 min |
| Tempo medio di risoluzione — Difficile | 45 min |
| Tempo medio di risoluzione — Esperto | 75 min |
Come Risolvere Sudoku Termo
| Tecnica | Cosa fa | Livello |
|---|---|---|
| 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. | Avanzato |
| Minimum/Maximum Bounding | The bulb value is ≤ 9 − (N − 1). The tip value is ≥ N. Apply these bounds immediately to prune all thermometer candidates. | Avanzato |
| Overlapping Thermometer Deduction | Two thermometers sharing a cell give tighter combined bounds than either alone. | Avanzato |
| 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. | Avanzato |
| Short vs. Long Thermometers | A 2-cell thermometer is simply a greater-than relationship. A 9-cell thermometer forces exactly 1–9 in order. | Avanzato |
Tempi Medi di Risoluzione
Facile
10 min
Medio
22 min
Difficile
45 min
Esperto
75 min
Domande Frequenti
Cos'è il 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.
Come leggo gli indizi del termometro?
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.