http://u.qdnx.org/file/erkan-20150130T133825-u4k5r9f.html
!chess program, only 487 bytes: "The built-in AI is also about as awful as you'd expect from such a tiny binary footprint, sacrificing pieces and position with very little rhyme or reason" http://arstechnica.com/gaming/2015/01/squeezing-a-playable-chess-program-into-487-bytes/