Six is a hex playing program for KDE. See
http://en.wikipedia.org/wiki/Hex_game for the description of the game.
It is quite strong and won several gold medals at the Computer Games
These details are provided for information only. No information here is legal advice and should not be used as such.
At one point, Open Hub analyzed source code for this project based on code location(s) available at that time. Since then, the code locations have been removed.