stockfish国象的代码，，注释很好。功能很强。-Stockfish is a free UCI chess engine derived from Glaurung 2.1. It is not a complete chess program, but requires some UCI compatible GUI (like XBoard with PolyGlot, eboard, Jose, Arena, Sigma Chess, Shredder, Chess

鼎鼎大名的glaurung，目前开源国际象棋引擎中的前三甲。等级分2700分左右。-Famous Glaurung, open source chess engine currently in the top three. Level at around 2700.