Achi is a board game for two people. It is similar to tic-tac-toe, except that you get to move your pieces after you put them all down. Unlike tic-tac-toe, draws do not occur.
In this application, you play against the computer. You can choose the computer skill level to be beginner, amateur, professional, expert or master. Also, you can solve puzzles where you must win in 2, 3, 4, or 5 moves.