SUDOKU 6x6 VOLUME 2: SUDOKU 6x6 VOLUME 2: 300 Sudoku Puzzles 6x6 for Kids, Teenagers and Adults | Mental Health Development | One Puzzle per Page | Includes Solutions : PUZZLING: Amazon.es: Libros
Children's Puzzles. Three volumes of 6x6 Sudoku puzzles. - Etsy España