Fruit
From LinuxReviews
Jump to navigationJump to searchFriut is a very advanced chess engine written by Fabien Letouzey which can be used as a computer opponent in graphical chess games such as PyChess.
It is very hard to beat even at the "beginner" level.
Versions
Fruit version 2.1 is free and licensed under the GNU GPL. Version 2.2.1 is not free.