Mediocre is a Java-based chess engine, implementing features like LMR, SEE, history and killer moves heuristics, transposition tables, internal iterative deepening, PVS search etc.
Cerial Killer is a checkers playing AI created as part of an AI course at Lund University. The course had a game tournament where the students where supposed to create their own AI that played checkers and play it against other students, this is one of the entries in the tournament 2008.