Free printable · Answer key included

Printable 10x10 Mosaic Puzzles (Hard), Pack 3

Our biggest printable Mosaic puzzles. A 10x10 grid takes patience and careful bookkeeping, so it suits experienced solvers who want a full page to work through.

Pack 3 of 3 has four Mosaic puzzles with an answer key on the second page. Each grid has 45 number clues.

How to solve

  • Count the block: A number counts the filled cells in its 3x3 block, itself included.
  • Fill or leave blank: Every cell ends up either filled or empty.
  • Edges count less: Blocks on the edge have 6 cells and corner blocks have 4.
  • Use the overlaps: Neighbouring numbers share cells, and comparing them is where most deductions come from.

Free to print and copy for home, classroom and library use. Every puzzle has one answer you can reach by logic alone.