"an UCI compatible open source chess engine developed by Tord Romstad, Marco Costalba, and Joona Kiiski. Marco forked the project from version 2.1 of Tord's strong engine Glaurung, first announced by Marco in November 8, 2008  . Starting out among the top twenty engines, it has quickly climbed in strength.The name "Stockfish" reflects the ancestry of the engine. Tord is Norwegian and Marco Italian, and there is a long history of stockfish trade from Norway to Italy (to Marco's home town of Vicenza, in fact). Stockfish also references another famous "little fish", Rybka."
Just for fun. Enjoy.