Arachne

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Arachne, an experimental chess program by Maarten van der Meulen and chess testbed of his research on search algorithms, like Alpha-Beta, and the best-first algorithms SSS*, Conspiracy number and Proof-number search, including parallel Conspiracy number search for instance in 1988 on a 10-processor system, and evaluation. In his ICCA Journal paper, Maarten van der Meulen mentions experiments with cn-search as published in 1988 by David McAllester in Arachne not encouraging , and introduced a new variation dubbed applied cn-search. Arachne played six consecutive Dutch Computer Chess Championships from 1985 until 1990.

=Selected Games=

Dappet
DOCCC 1989, round 1, Dappet - Arachne [Event "DOCCC 1989"] [Site "Leiden NED"] [Date "1989.10.??"] [Round "01"] [White "Dappet"] [Black "Arachne"] [Result "1-0"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 d5 5.exd5 Nxd5 6.d4 f6 7.dxe5 Ncb4 8.exf6 Nxf6 9.Bf7+ Ke7 10.Qe2+ Kd6 11.Qd2+ Nbd5 12.Bxd5 Qe8+ 13.Ne4+ Ke7 14.O-O Nxe4 15.Bxe4 Qa4 16.Re1 Be6 17.Bd5 Qd7 18.Rxe6+ Kd8 19.Bxb7 Qxd2 20.Nxd2 Rb8 21.Bc6 Be7 22.Nb3 Rf8 23.Be3 Bd6 24.Bxa7 Rb4 25.Rae1 Bxh2+ 26.Kxh2 Rbf4 27.Re8+ Rxe8 28.Rxe8# 1-0

Duck
DOCCC 1989, round 2, Arachne - Duck [Event "DOCCC 1989"] [Site "Leiden NED"] [Date "1989.10.??"] [Round "2"] [White "Arachne"] [Black "Duck"] [Result "1-0"]

1.d4 a6 2.e4 Nf6 3.e5 Nd5 4.c4 Nb4 5.Qd2 e6 6.Be2 d5 7.cxd5 Nxd5 8.Nf3 Nc6 9.O-O Be7 10.Nc3 Rf8 11.Qc2 Nxc3 12.bxc3 h5 13.Qh7 g5 14.Qxh5 Rg8 15.Be3 Bd7 16.h3 Na5 17.Qg4 Kf8 18.h4 Bc6 19.Nxg5 Rg7 20.Nxe6+ fxe6 21.Bh6 Bf6 22.exf6 Qxf6 23.Qxg7+ Qxg7 24.Bxg7+ Kxg7 25.Bg4 Rh8 26.h5 Be8 27.Rab1 Bxh5 28.Bxe6 Bg6 29.Rb2 Re8 30.Re1 Bf5 31.Re5 Rxe6 32.Rxf5 b6 33.g3 Re1+ 34.Kg2 Rc1 35.Rf3 Re1 36.Rb4 Re2 37.a3 Ra2 38.a4 Rd2 39.Re3 Kf6 40.Kf3 Kf7 41.g4 Rc2 42.d5 Rd2 43.Rf4+ Kg8 44.c4 c6 45.Re8+ Kg7 46.Re7+ Kg8 47.Rf6 cxd5 48.cxd5 Nc4 49.Rc6 Kf8 50.Re4 b5 51.Re2 Rxd5 52.Rxa6 bxa4 53.Rxa4 Rd4 54.Ra7 Rd5 55.Kf4 Rd6 56.g5 Nb6 57.f3 Nd7 58.Kf5 Rd4 59.Ra8+ Nb8 60.Rxb8+ Kf7 61.g6+ Kg7 62.Re7+ Kh6 63.Rh8# 1-0

=See also=
 * Ananse
 * m1.0
 * P.ConNerS
 * SpiderChess
 * Ulysses
 * Arthropod
 * Mythology

=Publications=

Arachne

 * Maarten van der Meulen (1988). Parallel Conspiracy-Number Search. M.Sc. thesis, Faculty of Mathematics and Computer Science, Vrije Universteit, Amsterdam.
 * Maarten van der Meulen (1989). Weight Assessment in Evaluation Functions. Advances in Computer Chess 5
 * Maarten van der Meulen (1990). Conspiracy-Number Search. ICCA Journal, Vol. 13, No. 1
 * Maarten van der Meulen, Victor Allis, Jaap van den Herik (1990). A Comment on `Conspiracy-Number Search'. ICCA Journal, Vol. 13, No. 2

Arachne elsewhere

 * Raphael Finkel, Marvin Solomon (1980). The Arachne Kernel. Version 1.2 Technical Report 380, University of Wisconsin-Madison, pdf
 * Raphael Finkel, John Philip Fishburn (1980). Parallel Alpha-Beta Search on Arachne. IEEE International Conference on Parallel Processing, pp. 235-243. pdf

=External Links=

Chess Program

 * The chess games of Arachne (Computer) from chessgames.com

Misc

 * Arachne from Wikipedia
 * Arachne (disambiguation) from Wikipedia
 * Arachne - Dictionary of Greek Mythology
 * Myth Man's Arachne Page
 * Arachnid from Wikipedia
 * Arachnophobia from Wikipedia
 * Arachnoid (astrogeology) from Wikipedia
 * Arachne (web browser) from Wikipedia
 * Toto Blanke - Lady's Bicycle Seat Smeller, Spider's Dance (1975), YouTube Video
 * feat. John Lee, Gerry Brown, Joachim Kühn, Charlie Mariano

=References=

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