Solve an original puzzle & test yourself through a strategic competition with your computer. You have to restore the initial pattern on the game-board divided in cells (stones). The zest of the game is that the pattern is drawn on both sides of the game-board; so, any changes made on one side involve changes on another side. You can restore the pattern yourself (on one side or on both sides), but also you can choose the computer to be an opponent, and compete with it. Neat interface, hundreds of patterns and theirgenerator, three levels of difficulty, training mode, score keeping, hints expansible multi-language interface andmany other features.