DreamChess is a user interface for playing chess. It comes with its own engine called Dreamer. Both DreamChess and Dreamer are compatible with the xboard/Winboard chess engine communication protocol. This means that DreamChess can be used with other xboard-compatible chess engines such as crafty (ftp://ftp.cis.uab.edu/pub/hyatt/) and GNU Chess (http://www.gnu.org/software/chess/). Similarly, the Dreamer chess engine can be used with other xboard-compatible user interfaces such as xboard and Winboard (http://www.tim-mann.org/xboard.html) and recent editions of the commercial chess program Chessmaster (http://www.chessmaster.com/).