Printable logic puzzles

Sudoku excludes repeats, nonograms describe runs, and cryptograms preserve symbol substitutions.

Ready to print

Deduce before guessing

Sudoku excludes repeats, nonograms describe runs, and cryptograms preserve symbol substitutions. First find a rule that eliminates options and explain what new information each step provides.

Distinguish certainty from a guess

Record remaining options and keep original clues visible. When something conflicts, return to the last conclusion you can justify. Solving logically means following the rules, not finishing quickly.