Mini-Sudoku for Kids by Charles Roberts (English) Paperback Book

It requires no mathematical ability; however, it improves logical thinking. There are thirty-six 4x4 puzzles, forty-eight 6x6 puzzles, sixteen 8x8 puzzles, and one 9x9 puzzle. Mini-Sudoku for Kids contains: 18 pages of instruction on "how-to-solve Sudoku puzzles" 4 step-by-step examples on solving a puzzle 100+ puzzles to solve number puzzles, letter puzzles, and symbol puzzles 3 pages of Sudoku history solutions to all puzzles.

eBay