Shredder is a commercial chess engine and graphical user interface (GUI) developed in Germany by Stefan Meyer-Kahlen in 1993. Shredder won the World Microcomputer Chess Championship in 1996 and 2000, the World Computer Chess Championship in 1999 and 2003, the World Computer Speed Chess Championship in 2002, 2003, 2004, 2005, and 2007, and the World Chess Software Championship in 2010.
The Shredder engine version 10.0 was released in June 2006. Version 11.0 was released in October 2007. Version 12 was released in January 2010. The "Deep" version takes advantage of multiple CPUs or multiple core CPUs. Version 13 was released on 30 October 2016. Version 13 is about 300 Elo better than Version 12. Version 14 was released in August 2026, purported to be 425 elo stronger than it's predecessor, likely in self play. It launched with a neural net.
Shredder is one of the few commercial chess programs which is available not only for Windows and Mac OS, but also for Linux. Shredder is also available on the iPhone, the iPad and Android. GNOME Chess is used as the graphical front-end for Shredder.
Competition results Shredder has participated in a number of computer chess tournaments since its inception. The following events are the tournaments in which Shredder has won.
YearLocationTitle 1996 Jakarta Micro Computer World Champion 1999 Paderborn Micro Computer World Champion Computer Chess World Champion 2000 London 17th World Micro Computer World Champion 2001 Maastricht Micro Computer World Champion Single CPU 2002 Blitz World Champion 2003 Graz Computer Chess World Champion Blitz World Champion 2004 Tel Aviv Blitz World Champion 2005 Reykjavík Blitz World Champion 2006 Mainz Chess960 World Champion 2007 Amsterdam Blitz World Champion 2010 Kanazawa Chess Software World Champion 2013 Yokohama Blitz World Champion 2015 Leiden Chess Software World Champion
See also Computer chess Fischer random chess Universal Chess Interface World Computer Chess Championship Top Chess Engine Championship
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