Lachex

Lachex (also LACHEX , an acronym formed from Los Alamos Chess Experiment ) is a chess computer program written by Burton Wendroff and Tony Warnock of Los Alamos National Laboratory . It competed at the World Championships in Computer Chess (WCCC) in Cologne in 1986 and in Madrid in 1992.

history

Cray X-MP was the most powerful supercomputer in the world at its time (1986)

At the 5th Computer Chess World Championship (5th WCCC) in Cologne in 1986, 23 programs competed against each other. One of them was Lachex . Its two developers used “the largest computer in the world at the time”. It was a Cray XMP 4/16 (picture) , of which they usually only had a small part of the computing time available during the World Cup.

At the 17th  North American Computer Chess Championship (NACCC) in 1986 in Dallas , Lachex took second place behind the tournament winner Belle . The game of Lachex and Bebe at this tournament gave rise to the formulation of the idea of singular extensions .

Web links

• Logo of the Los Alamos Chess experiment , accessed on November 27, 2017

Individual evidence

1. ↑ Record participation in the Computer Chess World Championship in Computer Chess & Games (CSS), No. 3, 1986, pp. 18 / I – 18 / XII
2. ↑ 10 years of Schröder… - The successful Dutch programmer reports from his professional life in CSS, No. 5, 1995, pp. 23–24
3. ↑ Frederic Friedel : Master of all classes - Ed Schröder won the 7th Computer Chess World Championships in Madrid in CSS, No. 1, 1993, pp. 10-18
4. ↑ Record participation in the Computer Chess World Championship in CSS, No. 3, 1986, p. 18 / II
5. ↑ The winner was persuaded to play –17. North American Computer Chess Championship in Dallas in CSS, No. 3, 1987, p. 19
6. ↑ Feng-hsiung Hsu : Behind Deep Blue - Building the Computer that Defeated the World Chess Champion. Princeton University Press , 2002, pp. 54-55, ISBN 0-691-09065-3