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BugChess, a family of chess programs written by programmer François Karr supported by chess advisor Jean-Philippe Karr. The early Bugchess versions starting in 1996 running under MS-DOS and Windows were compiled with Borland C++ and had their own GUI.

=Screenshot= BugChess GUI =BugChess2= BugChess2 is a WinBoard compliant chess engine written in C++. It was a complete rewrite and has no code in common with BugChess, and features a parallel search to utilize multiple processors. BugChess2 was first released in May 2006, and played a strong WCRCC 2008 Annual ACCA World Computer Rapid Chess Championship.

=Selected Games= WCRCC 2008, round 14, BugChess2 - Rybka [Event "WCRCC 2008"] [Site "Internet Chess Club"] [Date "2008.06.22"] [Round "14"] [White "BugChess2"] [Black "Rybka"] [Result "1/2-1/2"]

1.e4 c5 2.Nc3 d6 3.Nf3 Nf6 4.e5 dxe5 5.Nxe5 a6 6.a4 Qc7 7.d4 e6 8.Be3 Nbd7 9.Nc4 cxd4 10.Qxd4 Bc5 11.Qf4 Qxf4 12.Bxf4 Nd5 13.Nxd5 exd5 14.Nd6+ Ke7 15.Nxc8+ Rhxc8 16.O-O-O Nf6 17.f3 b5 18.axb5 axb5 19.Bxb5 Ra5 20.Bd3 Bb4 21.c3 d4 22.c4 Nd5 23.Bg5+ Ke6 24.Kc2 Ne3+ 25.Bxe3 dxe3 26.Ra1 Rca8 27.Rxa5 Rxa5 28.Be2 g5 29.h4 h6 30.hxg5 hxg5 31.g4 Ke5 32.Rh8 Kf4 33.Re8 Bd2 34.Re7 Kg3 35.Rxf7 Kf2 36.Kd3 Ra8 37.Rf5 Bc1 38.Rxg5 Bxb2 39.Rh5 Ra3+ 40.Kc2 Kxe2 41.Kxb2 Ra8 42.f4 Re8 43.Rh1 Kf3 44.f5 Kxg4 45.Kc2 Kf3 46.Kd1 Rd8+ 47.Ke1 Ra8 48.Rh3+ Ke4 49.Rh7 Ra1+ 50.Ke2 Ra2+ 51.Kd1 Kd4 52.Rd7+ Kxc4 53.f6 Rf2 54.f7 Kc5 55.Ke1 Kb6 56.Rd6+ Kb5 57.Rd7 Kc5 58.Kd1 Kc6 59.Rd3 Rxf7 60.Ke2 Re7 61.Rxe3 1/2-1/2

=Namesake=
 * BugChess by Erik van het Hof and Hermen Reitsma

=Forum Posts=
 * BugChess 2 bug by Gábor Szots, Winboard Forum, July 26, 2007
 * BugChess2 1.5.2 is out ! by François Karr, CCC, October 15, 2007
 * BugChess2 1.6.3 is out ! by François Karr, CCC, November 04, 2008
 * BugChess2 1.6.4 released ! by François Karr, CCC, November 05, 2009
 * BugChess2 1.9 available (SMP) by François Karr, CCC, April 29, 2011
 * SWCR: BugChess2 1.9 x64 test finished, +42 ELO by Frank Quisinsky, CCC, June 10, 2011

=External Links=

Chess Engine

 * BugChess2 from WBEC Ridderkerk (Wayback Machine)
 * Engine Download List from Ron Murawski's Computer-Chess Wiki
 * BugChess2 1.5.2 in KCEC
 * BugChess2 in CCRL 40/4

Bug

 * Bug from Wikipedia
 * Software bug from Wikipedia
 * Hemiptera (true bug) from Wikipedia

=References= Up one Level