The Sudoku puzzle was designed by Howard Garns, a retired architect and freelance puzzle constructor. The puzzle was introduced in Japan and got its name Sudoku (su = number, doku = single). Now, it is very popular around world. The attraction of the puzzle is that the completion rules are simple, yet the line of reasoning required to reach the completion may be difficult. Sudoku is recommended by some teachers as an exercise in logical reasoning. Sudoku Bugoosoft game is released by Bugoosoft.com. You would get fun as well as you get exercise in logical reasoning. And it is very easy to play. You will be surprised when you complete a puzzle.