Medium · 8×8 grid
8×8 Thermometer Puzzle
At 8×8, thermometers get long enough that the squeeze and ceiling techniques become essential. Most 8×8 puzzles open with only a line or two you can fill straight away, after which the deductions build on each other.
About 8×8 thermometer puzzles
| Grid | 8 × 8 = 64 cells |
|---|---|
| Difficulty | Medium |
| Typical solve time | 3–8 minutes |
| Shapes | Straight or curved thermometers |
| Solutions | Exactly one, checked by our solver |
Tips for 8×8 puzzles
- For each line, write down the minimum and maximum mercury it could still hold.
- Long thermometers lying along a line are where the squeeze works best.
- Check crossing thermometers: each adds at most one cell to a line.
New to the game? Read how to play, or study the solving strategies. Other sizes: 4×4 · 6×6 · 10×10 · 12×12 · 15×15.