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Home * Engines * Matador

Matador, showing traditional outfit [1]

a family of private chess engines by Stefan Knappe. Matador played six IPCCCs, and had its debut in 2000 where it upset IsiChess in the Semi-Slav Botvinnik Variation, further the BELCT 2001 as Lokalmatador [2], and the CCT6 and CCT7 online tournaments.


The first version, Matator I, developed in 1996, was written in Visual Basic 5.0, had an own GUI, used a 10x12 Board, performing PVS with transposition table, null move pruning, quiescence search, and some kind of check extensions [3]. Matador II in 1998 was written in C and compliant with the Chess Engine Communication Protocol. In 2002, Matador III was a major rewrite using bitboards as board representation, and supported UCI, while Matador IV started to play chess in 2004 [4].


Matador IV.JPG

Chess System Matador IV [5]


IPCCC 2000, round 2, Matador - IsiChess

[Event "IPCCC 2000"]
[Site "Paderborn GER"]
[Date "2000.02.10"]
[Round "02"]
[White "Matador"]
[Black "IsiChess"]
[Result "1-0"]

1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.Nc3 e6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 hxg5 10.Bxg5 Nbd7 
11.Qf3 Bb7 12.exf6 Qb6 13.O-O-O c5 14.d5 b4 15.Na4 Qa5 16.Qe3 O-O-O 17.dxe6 fxe6 18.b3 cxb3 
19.axb3 c4 20.Bxc4 Rh5 21.f4 Bxg2 22.Rhe1 Bd5 23.Bxd5 exd5 24.f7 Qa6 25.Bxd8 Kxd8 26.Qe8+ Kc7
27.Rd2 Rh6 28.f5 Qb5 29.Qa8 Rc6+ 30.Kb1 Qb8 31.Qxb8+ Nxb8 32.Re8 Nd7 33.Rxd5 Rf6 34.Ra5 Kb7 
35.Rd5 Kc7 36.Ra8 Rxf7 37.Rxa7+ Kc6 38.Rd1 Ne5 39.Rxf7 Nxf7 40.Rd4 Bd6 41.h4 Nh6 42.f6 Be5 
43.Rxb4 Nf7 44.Rb6+ Kd5 45.Ra6 Bd4 46.Kc2 Ke4 47.Nc3+ 1-0

Forum Posts

External Links

Chess Engine

Schach | Homepage Stefan Knappe (Wayback Machine, August 10, 2009)



  1. Early 20th century photograph of a matador, showing traditional outfit. The photo is taken from the 1935 book The Secret Museum of Mankind with no author and no copyright notice. It has been faithfully reproduced and released under a Creative Commons Noncommercial 3.0 license. However, since this is a faithful two-dimensional reproduction of a work that is within the public domain, it should be within the public domain itself, at least in the United States. Wikimedia Commons, Matador (Torero) from Wikipedia
  2. Lokalmatador – Wiktionary
  3. wacnew.epd & single search improvements (extensions) by Stefan Knappe, Winboard Forum, June 19, 2003 » Win at Chess
  4. Schach | Homepage Stefan Knappe (Wayback Machine, August 10, 2009)
  5. Chess System Matador IV Screenshot from Schach | Homepage Stefan Knappe (Wayback Machine, August 10, 2009)

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