Chess Links

There are lots of freeware chess programs available on the Net. Many of these do not have their own user interface but instead work with separate interface programs such as Winboard or xboard. For a big list of available programs, see Leo Dijksman's excellent WBEC web site or the Computer Chess Wiki.

Following are some links to free chess engines I'm especially familiar with, and recommend. All of these play a decent game of chess, good enough to be challenging for most amateurs. Stockfish and Critter are probably the strongest of these.

Free chess engines
Amyan AnMon The Baron Bugchess2
Crafty Critter Fruit Gaviota
Pharaon Scorpio Slow Chess Spike
Stockfish Toga II Umko Wildcat

The following strong chess engines are now commercial, but have earlier free versions still available:

Rybka: free commercial
Houdini: free commercial
Ruffian: free commercial

Good general chess sites I like include Chess Cafe, TWIC (The Week in Chess), and chessgames.com.

If you want more info about chess programming, you might look at the following sites:

Also check out ERIC, a robot that plays chess using a modified version of Arasan!