Su Doku Classic, the PC version of the puzzle craze sweeping the nation. Discover a host of Sudoku puzzles to sink your teeth into, from really easy to fiendishly difficult! Addictive and fun, the rules are simple: each number from 1 to 9 should be used only once in each row, column, and 3 by 3 square. The puzzle is completed when there are no more unknown squares. You don't have to be a mathematical genius to play as each of the puzzles can be solved using pure logic. Su Doku Classic has 3 difficulty levels: beginner, intermediate, and advanced, providing hours of challenging fun for all ages and ability levels!