These 20 6x6 puzzles are a good stepping stone between 4x4 and 9x9 puzzles to help beginners learn how to do these fun logic puzzles. There are color, black and white, letter, and A4 versions of all of them, plus answer keys. Each puzzle prints on a half sheet of paper. Sudoku teaches number recognition, problem solving, attention to detail, and concentration.

Printed pages: 80