Expert · 12×12 grid
12×12 Thermometer Puzzle
The 12×12 thermometer puzzle is for solvers who have mastered the basics. Many lines start out undecided, and progress comes from combining several lines at once. Your progress saves automatically, so you can finish later.
About 12×12 thermometer puzzles
| Grid | 12 × 12 = 144 cells |
|---|---|
| Difficulty | Expert |
| Typical solve time | 15–35 minutes |
| Shapes | Straight or curved thermometers |
| Solutions | Exactly one, checked by our solver |
Tips for 12×12 puzzles
- Scan the whole board for small clues (0–2). Their ceilings remove many cells.
- Use the two-line bridge on dense areas.
- Try a supposition only on a cell with two clear outcomes, and undo if it fails.
New to the game? Read how to play, or study the solving strategies. Other sizes: 4×4 · 6×6 · 8×8 · 10×10 · 15×15.