Free printable · Answer key included
Printable 10x10 Thermometer Puzzles (Hard), Pack 2
Our biggest printable thermometer puzzles. A 10x10 grid takes patience and careful bookkeeping, so it suits experienced solvers who want a full page to work through.
Pack 2 of 3 has four thermometer puzzles with an answer key on the second page. Each grid has 20 thermometers.
10x10 Thermometer Puzzles (Hard) · Pack 2
logicpuzzles.ca/printable/thermometers/hard-10x10/pack-2
Puzzle 1 · #309
Puzzle 2 · #413
Puzzle 3 · #421
Puzzle 4 · #457
Answers: 10x10 Thermometer Puzzles (Hard) · Pack 2
logicpuzzles.ca/printable/thermometers/hard-10x10/pack-2
Puzzle 1
Puzzle 2
Puzzle 3
Puzzle 4
How to solve
- Row and column counts: The number beside a row, or above a column, is how many of its cells are filled.
- Start at the bulb: Mercury begins at the round bulb and rises toward the flat end.
- No gaps: A cell can only be filled if every cell between it and the bulb is filled too.
- Any level: A thermometer can be empty, partly filled or completely full.
Free to print and copy for home, classroom and library use. Every puzzle has one answer you can reach by logic alone.