Thermo Sudoku
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Sådan spiller du Thermo Sudoku
Standard Sudoku-regler gælder. Ekstra regel: cifre langs hver grå termometer skal strengt stige fra pæren (cirkelenden) til spidsen. Et 3-celle termo kunne være 2,5,8 eller 1,4,9 men ikke 3,3,7 eller 5,4,8.
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Cifre skal strengt stige langs termometerformer
Thermo Sudoku Let
Thermo Sudoku Mellem
Thermo Sudoku Svær
Thermo Sudoku Ekspert
Hvad er Thermo Sudoku?
Thermo Sudoku overlejrer termometerformer på gitteret. Hvert termometer har en pære (cirkel) i den ene ende og en spids i den anden. Cifrene langs ethvert termometer skal strengt taget stige fra pæren til spidsen. Kombineret med standard Sudoku-begrænsninger skaber dette kraftfulde kæder af deduktioner — ved at vide at pæren er mindst 1 og spidsen højst 9, kan du beregne intervallet af gyldige værdier for hver celle på termometeret baseret på dens position.
På et Blik
| Begrænsningstype | Linjebegrænsninger |
| Typiske givne tal | 20–28 |
| Sværhedsgradsvurdering | ★★★★☆ 4/5 |
| Gns. løsningstid — Let | 10 min |
| Gns. løsningstid — Mellem | 22 min |
| Gns. løsningstid — Svær | 45 min |
| Gns. løsningstid — Ekspert | 75 min |
Sådan løser du Thermo Sudoku
| Teknik | Hvad det gør | 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. | Avanceret |
| Minimum/Maximum Bounding | The bulb value is ≤ 9 − (N − 1). The tip value is ≥ N. Apply these bounds immediately to prune all thermometer candidates. | Avanceret |
| Overlapping Thermometer Deduction | Two thermometers sharing a cell give tighter combined bounds than either alone. | Avanceret |
| 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. | Avanceret |
| Short vs. Long Thermometers | A 2-cell thermometer is simply a greater-than relationship. A 9-cell thermometer forces exactly 1–9 in order. | Avanceret |
Gennemsnitlige Løsningstider
Let
10 min
Mellem
22 min
Svær
45 min
Ekspert
75 min
Ofte stillede spørgsmål
Hvad er 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.
Hvordan læser jeg thermometer clues?
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.