Mini · 4×4 grid
4×4 Thermometer Puzzle
The 4×4 thermometer puzzle is the smallest grid we offer. With only five or six thermometers, it is ideal for learning how mercury fills from the bulb, for teaching children basic logic, or for a ten-second brain warm-up.
About 4×4 thermometer puzzles
| Grid | 4 × 4 = 16 cells |
|---|---|
| Difficulty | Mini |
| Typical solve time | under a minute |
| Shapes | Straight or curved thermometers |
| Solutions | Exactly one, checked by our solver |
Tips for 4×4 puzzles
- Look for a row or column with clue 0 or 4. Most 4×4 puzzles have one.
- Once one line is fixed, the crossing lines usually resolve at once.
- Try solving without marking air, then switch to marking air to see the difference.
New to the game? Read how to play, or study the solving strategies. Other sizes: 6×6 · 8×8 · 10×10 · 12×12 · 15×15.