The Japanese puzzle game Sudoku initially became popular in Japan in 1986 and reached extreme international popularity in 2005. Now you can have unlimited new puzzles on your personal computer! Below you see a typical Sudoku puzzle grid. Initially some cell are filled with random digits. The goal is to complete the grid in such a way that each row, each column, and each 3x3 box contains all of the digits 1 through 9. Sudoku Ace computer program offers millions of randomly generated different puzzles for your pleasure. A tough Sodoku puzzle may take a few hours to solve. This is where the benefit of software comes in. Since Sudoku Ace isn¡¯t pen and paper, there are an unlimited number of corrections that can be done.