Free printable · Answer key included
Printable 7x7 Thermometer Puzzles (Medium)
The everyday size: a 7x7 grid leaves room for real chains of deduction without taking over your afternoon. Good for regular solvers and older students.
This first pack has six thermometer puzzles with an answer key on the second page. Each grid has 16 to 20 thermometers.
7x7 Thermometer Puzzles (Medium)
logicpuzzles.ca/printable/thermometers/medium-7x7
Puzzle 1 · #262
Puzzle 2 · #185
Puzzle 3 · #124
Puzzle 4 · #236
Puzzle 5 · #122
Puzzle 6 · #129
Answers: 7x7 Thermometer Puzzles (Medium)
logicpuzzles.ca/printable/thermometers/medium-7x7
Puzzle 1
Puzzle 2
Puzzle 3
Puzzle 4
Puzzle 5
Puzzle 6
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.