Günther Schrüfer

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Günther Schrüfer, a German computer scientist, chessplayer and computer chess programmer. He defended his M.Sc. on modeling Search Trees in Chess 1983 and his Ph.D. on costs, qality and algorithms of minimax search in 1988 at the Technical University of Braunschweig. In his 1988 paper Root Evaluation Errors: How they Arise and Propagate, Ingo Althöfer used Schrüfer's model limited to regular binary two-valued trees of depth n, to demonstrate how root errors arose.

=Chess Programs= Along with Hans-Joachim Kraas, Günther Schrüfer is co-author of the chess programs Bobby, Bobby II and Doctor?. He is co-author of Das große Computerschachbuch (German), describing chess programming topics, and the didactic chess program Demoschach written in Basic.

=Photos & Games= Günther Schrüfer, Hans-Joachim Kraas, Ossi Weiner and Richard Lang WCCC 1986, round 4, Bobby - Mephisto X [Event "WCCC 1996] [Site "Cologne, Germany"] [Date "1986.06.14"] [Round "4"] [White "Bobby"] [Black "Mephisto X"] [Result "1-0"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Be7 7.h3 O-O 8.Nf3 Nc6 9.Be2 Bf5 10.O-O Qd7 11.Bf4 Rae8 12.a4 Bf6 13.a5 Nc8 14.a6 b6 15.g4 Bxg4 16.hxg4 Qxg4+ 17.Bg3 Nxd4 18.Nxd4 Qxd4 19.Qc2 h6 20.Rfd1 Qc5 21.Nb5 Be5 22.Rd5 Qc6 23.Bxe5 Rxe5 24.Rxe5 dxe5 25.Bg4 Nd6 26.Nxa7 Qc5 27.Bd7 e4 28.Nb5 Nxb5 29.Bxb5 Qg5+ 30.Kf1 Qh4 31.Rd1 Qh1+ 32.Ke2 Qf3+ 33.Ke1 Qh1+ 34.Kd2 Qg2 35.Kc1 Qg6 36.Qb3 c6 37.Ba4 c5 38.Qg3 Ra8 39.Qxg6 fxg6 40.Bb5 g5 41.Rd7 h5 42.a7 e3 43.fxe3 Rf8 44.Bc6 h4 45.a8=Q Rxa8 46.Bxa8 h3 47.Rd5 1-0

=See also=
 * WCCC 1986 Video

=Selected Publications=
 * Günther Schrüfer (1983). Ein Modell für den Spielbaum beim Schach : Implementierung und Vergleich mit anderen Modellen. TU Braunschweig (German)
 * Rainer Bartel, Hans-Joachim Kraas, Günther Schrüfer (1985). Das große Computerschachbuch. Data Becker (German) from amazon.de
 * Günther Schrüfer (1986). Presence and Absence of Pathology on Game Trees. Advances in Computer Chess 4
 * Günther Schrüfer (1988). Minimax-Suchen : Kosten, Qualität und Algorithmen. Ph.D. thesis, TU Braunschweig (German)
 * Ingo Althöfer (1988). Günther Schrüfer: Minimax-suchen: Kosten, Qualität und Algorithmen. ICCA Journal, Vol. 11, No. 4 (Review)
 * Günther Schrüfer (1989). A Strategic Quiescence Search. ICCA Journal, Vol. 12, No. 1

=External Links=
 * Schruefer, Guenther, Dr. FIDE Chess Profile
 * Günther Schrüfer's ICGA Tournaments

=References=

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