Dirty is a  Winboard compatible chess engine. It is an hybrid between BUZZ (Pradu Kannan and Fonzy Bluemers, search) and EveAnn (Andres Valverde, evaluation). At 6 Nov, 2008 it looks a bit stronger than its parentals For more info go to the Dirty Chess Engine Site If you only are looking for old versions, here are some : Dirty 20 July, 2007 (ZIP file) Dirty 12 March, 2008 (RAR file) Dirty 21 May, 2008 (RAR file, No-SSE version included) Dirty 0.99n (RAR file, No-SSE version included) Dirty 0.99z  (RAR file. Released 06 Nov 2008) Dirty 0.99OW5 (RAR file. Released 14 March 2009) logo by Jim Ablett