• 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.

I loved that you can play sudoku like this, very easy for elderly.