BOHS Wooden Color Sudoku Board Game with 320-Puzzle Book

Promote Logical Thinking - Logical skills are the core requirement for playing a Sudoku puzzle. The difficulty level depends on the number of clues given, the more complicated inference pattern will become as you play more challenging puzzle. Multicoloured Tiles - Multicolored tiles also allow players to solve the puzzles with vibrant colors in addition to numbers. No More Erasing - Double-sided tiles for trial and error, no need to erase wrong number; no pencil or paper required. Easy Storage - Designed with a drawer container, easy for storage and carry around. Easy to Hard - Includes grid boards of 4x4 Grids, 6x6 Grids, and 9x9 Grids, ranging from easy to difficult, step by step for novice to expert players.