Our magnetic Sudoku offers children great fun with a high learning factor. The oddball magnets are placed on either 9 (3x3) or 16 (4x4) squares to solve the Sudoku. This duelling version offers double the fun, as two players can compete against each other. Contents: 1 game box, 32/74 Kauzi magnets, 36 Sudoku cards, parents' guide.