Dappet

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**Dappet**, 
the chess program by [[Dap Hartmann]] and [[Peter Kouwenhoven]], competing all 18 consecutive [[Dutch Open Computer Chess Championship|Dutch Open Computer Chess Championships]] from [[DOCCC 1981|1981]] until [[DOCCC 1998|1998]]. It further participated at the [[WMCCC 1988]] in [[http://en.wikipedia.org/wiki/Almer%C3%ADa|Almeria]], the [[WCCC 1989]] in [[http://en.wikipedia.org/wiki/Edmonton|Edmonton]], the [[3rd Computer Olympiad#Chess|3rd Computer Olympiad 1991]], and various [[Aegon Tournaments]]. Dappet of the late 80s and 90s was written in [[Pascal#TurboPascal|Turbo Pascal]] and [[Assembly|Assembler]] to run on an [[x86]] based [[IBM PC]] or compatible. It used a [[10x12 Board|10x12 board]]  <ref>[[Dap Hartmann]] (**2009**). //A Thesis is more than three unrelated Ideas//. Review, [[ICGA Journal]], Vol. 32, No. 2</ref>. It did not utilize the [[Butterfly Heuristic]], proposed by Hartmann in conjunction with  [[Butterfly Boards]] as a pure thought experiment <ref>[[Dap Hartmann]] (**1988**). //Butterfly Boards//. [[ICGA Journal|ICCA Journal]], Vol. 11, Nos. 2/3, pp. 64-71. </ref>.

=Description= 
from the [[WCCC 1989]] booklet <ref>[[http://www.computerhistory.org/chess/full_record.php?iid=doc-434fea055cbb3|Kings Move - Welcome to the 1989 AGT World Computer Chess Championship.]] Edmonton, Alberta, Canada, Courtesy of [[Peter Jennings]], from [[The Computer History Museum]], [[http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1989_WCCC/1989%20WCCC.062302028.sm.pdf|pdf]]</ref>:
|| {{Dappet uses the [[NegaScout]] algorithm enhanced with [[Refutation Table|refutation tables]], [[Killer Heuristic|killer heuristic]], [[History Heuristic|history heuristic]] and [[Transposition Table|transposition tables]] (700,000 entries) to search the [[Search Tree|game tree]]. The strategy used is basically [[Brute-Force|brute force]], with [[Extensions|selective deepening]] of forced lines of play. The [[Opening Book|opening book]] consists of some 15,000 positions.}} ||
[[#Sylkar]]
=Sylkar=
At two occasions, the [[DOCCC 1986]] and [[DOCCC 1994]], to even the number of entries, a female version of Dappet was entered, Sylkar for Sylvia and Karin <ref>[[Jaap van Oosterwijk Bruyn]] (**1986**). //Nona retains her Title//. [[ICGA Journal|ICCA Journal]], Vol. 9, No. 3, pp. 160</ref>.

=Selected Games=
[[DOCCC 1997]], round 5, [[Dappet]] - [[Zzzzzz]] <ref>[[http://www.csvn.nl/index.php?option=com_docman&task=cat_view&gid=37&Itemid=26&lang=en&limitstart=15|Downloads | Open Dutch Computer Chess Championships | Games]]</ref>
[[code]]
[Event "DOCCC 1997"]
[Site "Alphen a/d Rijn NED"]
[Date "1997.11.23"]
[Round "05"]
[White "Dappet"]
[Black "Zzzzzz 4.2"]
[Result "1-0"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Bd2 Bxd2+
8.Nbxd2 Nxe4 9.d5 Nxd2 10.Qxd2 Ne7 11.d6 cxd6 12.O-O-O Qc7 13.Qf4 O-O
14.Kb1 Ng6 15.Qe4 Ne5 16.Bd5 g6 17.Rhg1 a6 18.Rge1 Nc6 19.Ng5 Kg7 20.Qh4
h5 21.Nxf7 Rxf7 22.Bxf7 b6 23.Bd5 Bb7 24.Bxc6 1-0
[[code]]

=External Links= 
* [[http://www.game-ai-forum.org/icga-tournaments/program.php?id=361|Dappet's ICGA Tournaments]]
* [[http://www.chessgames.com/perl/chessplayer?pid=59999|The chess games of Dappet (Computer)]] from [[http://www.chessgames.com/index.html|chessgames.com]]
* [[http://www.ficgs.com/chess-games-Comp%20Dappet-.html|Chess games played by Comp Dappet]] from [[http://www.ficgs.com/|FICGS, Free Internet Correspondence Games Server]]

=References= 
<references />
=What links here?= 
[[include page="Dappet" component="backlinks" limit="40" ]]
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