This is yet another in the line of Sudoku games released in 2005. The game contains a quad-fold board, a 60-second sand timer, 100 puzzles (with solutions, of course), and wooden tiles to play the puzzles. It follows the same rules as the Sudoku games, where you're trying to place 1-9 in each column and row, and in each 9-square region of the board.There are rules for playing with 1, 2, or 'more' players. - BoardGameGeek