If you like to play chess without downloading any exe file, why not try my Java applet to start playing immediately? There is also an edit mode so you can set up any position to analyze it. Just click on the chessboard below:
If you want a stronger opponent or if you are interested in matches between chess programs (with a WinBoard or UCI interface), you had better download the following executable program, to run under Windows:
Download Queen 4.03a.
Queen will play much better in openings if you also use the separate (binary)
openings book (about 2 MB, zipped), based on files
supplied by Carlos Pesce.
Special engine version (WinBoard/UCI)
If you want to use Queen only for machine-machine games (using the WinBoard or UCI protocol)
and you encounter any problems with the above general version due to Queen's
graphical user interface, please use Queen402Eng, which is merely a chess engine, without a GUI.
For more information, download the files readme.txt and queen.txt.
Some computer-chess related websites:
WinBoard Forum
Arena website