...are the "brains" of modern chess software. Most of them can be used within any of the commonly available chess programs (see section GUIs).
If you have one of these chess GUIs installed on your computer, you can download any chess engine and use it in that program (for chess analysis, tournaments or as a computer opponent). On this site you can download two of the strongest free chess engines, you will find others here.
This is an engine that was developed since 1995 by Stefan Zipproth. It played thousands of games against both human masters and other computers in the Internet Chess Club (view current ICC rating). It plays rather aggressive and is known for its flexible time management. Supported interfaces: UCI, WinBoard.
This is a relatively young engine which has become incredibly strong in short time and was developed by Fritz Reul. It has comprehensive positional knowledge and manages to be at the same time very fast and strategically well-balanced. Supported interfaces: UCI.
German version
Copyright © 2004 Stefan Zipproth.