Andux Land Wooden Sudoku Puzzle Board Game with Drawer SD-02 (Green)

No pencil or paper required. Made of beech wood, 81 thinking tiles. The best way to train brain. 2 spare tiles per number included. Comes with booklet of 100 sudoku puzzles; With 9 pieces spare chess. The best way to train brain. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called boxes, blocks, regions, or subsquares) contains all of the digits from 1 to 9. Makes a great board game gift for number-puzzle lovers.