"FiveStones" is a traditional Chinese strategy game. In the game, two players put their own stones (black or white) in turn on a 19x19-line board. Once on the board, the stones can not be moved or overlaid or removed. The winner is the first person who has on the board five consecutive stones of his kind along the lines or diagonally. Your Mac can play with four levels. However, if you want to challenge your Mac seriously, play the level 4 and be patient. It takes about 1 to 2 minutes for each move in the "level 4" mode on my Mac IIcx, whereas 30, 10 and less than 1 second in the other 3 levels respectively.
I intend to make this program a shareware. If you like it, please send me $5. You are free to distribute it without profit. Any comments and suggestions are heartily welcome.