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Created page with "'''Home * Engines * Zarkov''' FILE:101frankshannon.jpg|border|right|thumb|link=http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov|Dr. Zarkov <ref>[http://f..."
'''[[Main Page|Home]] * [[Engines]] * Zarkov'''
[[FILE:101frankshannon.jpg|border|right|thumb|link=http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov|Dr. Zarkov <ref>[http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov Dr. Hans Zarkov - Flash Gordon Wiki], image courtesy [http://community.wikia.com/wiki/User:Toughpigs Danny Horn]</ref> ]]
'''Zarkov''',<br/>
a commercial chess program by [[John Stanback]] written in [[C]]. The first version in 1989 was similar to John's [[GNU Chess|GNU Chess 2.0]], but used other data structures based on [[0x88]] and run on [https://en.wikipedia.org/wiki/HP_9000 HP 9000] workstations or [[IBM PC|PCs]] with its own [[GUI]]. In 1990, John Stanback discovered a new [[Pruning|pruning technique]], a combination of [[Evaluation|evaluation heuristics]] and [[Reductions|reduced depth search]], which was implemented in Zarkov 2.5, also market as [[Grandmaster Chess]] <ref>[http://john.stanback.net/zarkov/zarkov_history.html Zarkov Development History]</ref>. Zarkov stores positions in which the [[Score|score]] changes significantly between a shallow search (about 2 plies) and a deeper search into a [[Persistent Hash Table|persistent hash table]], retrieved at the start of each game to make Zarkov remember positions from previous games in its search to avoid worse positions in advance <ref>[http://john.stanback.net/zarkov/zarkov_methods.html How Zarkov Plays Chess] 5. Learn Table</ref>.
=Screenshot=
[[FILE:zarkov.gif|none|border|text-bottom|link=http://www.septober.de/chess/index.htm]]
Zarkov DOS Screen <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
=Windows=
A [[Windows]] [https://en.wikipedia.org/wiki/Dynamic_Data_Exchange DDE Server] Zarkov was used with the [[Bookup]] <ref>[http://www.bookup.com/ Bookup | Chess Openings | Chess Opening Software]</ref> and [[Chess Assistant]] database programs. The [[Chess Engine Communication Protocol]] compliant but unreleased Zarkov 4.5X played some private engine tournaments with promising results. The so far final version Zarkov 5.0 is a [[Windows]] [https://en.wikipedia.org/wiki/Dynamic-link_library DLL file] which was sold as an add-on engine for the [[Chess Genius|Millenium Genius 6]] aka [[Millennium Chess System]] interface <ref>[http://www.talkchess.com/forum/viewtopic.php?t=64355 Zarkov 5 Millenium Chess System] by [[Norbert Raimund Leisner]], [[CCC]], June 21, 2017</ref>.
=Tournament Play=
Zarkov played the [[WCCC 1989]], and the five late [[ACM North American Computer Chess Championship|ACM North American Computer Chess Championships]], [[ACM 1989]], [[ACM 1990]], [[ACM 1991]], [[ACM 1993]], and [[ACM 1994]] where Zarkov became runner up behind [[Deep Thought|Deep Thought II]]. It did quite well in the [[Aegon Tournaments]] held from 1994-1997, each time 4/6, and further played the [[BELCT 2001]] and [[CCT4]].
=Selected Games=
==ACM 1993==
[[ACM 1993]], round 3, [[HiTech|B*Hitech]] - [[Zarkov]] <ref> [http://www.csvn.nl/index.php?option=com_docman&task=cat_view&gid=60&Itemid=26&lang=en PGN Download NACCC] from [http://www.csvn.nl/index.php?option=com_docman&task=cat_view&gid=13&Itemid=26&lang=en Computerschaak/Downloads/Games] hosted by [[CSVN]]</ref>
<pre>
[Event "ACM 1993"]
[Site "Indianapolis USA"]
[Date "1993.02.15"]
[Round "3"]
[White "B*Hitech"]
[Black "Zarkov"]
[Result "0-1"]
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2 a6 8.f4 d5 9.e5
Qh4+ 10.g3 Qh5 11.Bg2 Bh3 12.Bf3 Bg4 13.Bg2 Nxd4 14.Bxd4 Bxd4 15.cxd4 O-O 16.O-O
c6 17.Rf2 Rfe8 18.Nc3 Nf5 19.Na4 Re6 20.Nb6 Rae8 21.Qd3 Rg6 22.Rc1 Rh6 23.Bh1 Qg6
24.Na4 Ra8 25.Nc5 b6 26.Na4 b5 27.Nc5 a5 28.Rcf1 a4 29.Qc3 Rc8 30.Ra1 Re8 31.b3 a3
32.b4 Ra8 33.Nb3 Qe6 34.Na5 Rc8 35.Rd2 f6 36.Qxa3 fxe5 37.fxe5 Qd7 38.Rf1 Bh3 39.Rf4
Re8 40.Nb3 Qd8 41.Nc5 Rf8 42.Rdf2 g5 43.R4f3 Bg4 44.Rd3 Bh3 45.Qc1 Ng7 46.Rxf8+ Qxf8
47.Qd1 Ne6 48.Rf3 Qe8 49.Ra3 Qf8 50.Nxe6 Rxe6 51.g4 Rh6 52.Bf3 Qxb4 53.Ra6 Qc3 54.Kh1
Rg6 55.a3 Kh8 56.a4 Rg8 57.e6 Re8 58.Be2 Rxe6 59.axb5 Rxe2 60.Ra8+ Kg7 61.Ra7+ Kf6
62.Qf1+ Bxf1 63.Rf7+ Kxf7 64.Kg1 Bh3 65.bxc6 Qc1# 0-1
</pre>
==ACM 1994==
[[ACM 1994]], round 2, [[Cray Blitz]] - [[Zarkov]]
<pre>
[Event "ACM 1994"]
[Site "Cape May USA"]
[Date "1994.06.25"]
[Round "2"]
[White "Cray Blitz"]
[Black "Zarkov"]
[Result "0-1"]
1.e4 e5 2.Bc4 Nf6 3.d3 c6 4.Nf3 d5 5.Bb3 Bb4+ 6.Bd2 Bd6 7.exd5 cxd5 8.Nc3 Be6
9.O-O Nc6 10.Nb5 Bb8 11.Kh1 a6 12.Nc3 h6 13.a4 Bd6 14.Re1 O-O 15.Bc1 Qb6 16.Kg1
Rac8 17.Qe2 Rfe8 18.Qd1 Bc5 19.Rf1 Nd4 20.Nxd4 Bxd4 21.a5 Qa7 22.h3 Bxc3 23.bxc3
d4 24.c4 Bd7 25.Re1 Bc6 26.Ba3 Re6 27.Rb1 Nd7 28.Ba2 Rg6 29.f3 Re8 30.Bb4 Nf6
31.Bb3 Nh5 32.Bd2 Qc5 33.Ra1 Qe7 34.Kh2 Qh4 35.Rg1 Nf4 36.Bxf4 exf4 37.Ba4 Bxa4
38.Rxa4 Qf2 39.Qf1 Qxc2 40.Ra1 Re2 41.Rc1 Qxd3 42.Re1 Rge6 43.Rb1 Re7 44.c5 Qc2
45.Rc1 Qg6 46.Kh1 d3 47.Rb1 Qg3 0-1
</pre>
==BELCT 2001==
[[BELCT 2001]], round 7, [[Zarkov]] - [[Yace]] <ref>[https://www.stmintz.com/ccc/index.php?id=192011 BELCT 2001 discussion of the game zarkov-yace] by [[Uri Blass]], [[CCC]], October 05, 2001</ref>
<pre>
[Event "1.BELCT2001"]
[Site "Berlin"]
[Date "2001.10.03"]
[Round "7"]
[White "Zarkov 4.5T"]
[Black "Yace"]
[Result "1-0"]
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7 6.a3 a5 7.Bd3 Nc6 8.Bc2 Nh6 9.O-O cxd4
10.cxd4 Nf5 11.Bxf5 exf5 12.Nc3 Be6 13.Na4 Qa7 14.Be3 Be7 15.Rc1 Rc8 16.Qd3 O-O
17.Rfe1 Rfe8 18.Rc3 Nb8 19.Bg5 Bf8 20.Qb5 Bd7 21.Qxd5 h6 22.Rxc8 Rxc8 23.e6 fxe6
24.Rxe6 Kh8 25.Nc3 b5 26.Rg6 Bc6 27.Qe5 Qd7 28.Rxh6+ Kg8 29.Rxc6 Qxc6 30.Qxf5 b4
31.Ne5 Qe8 32.axb4 Nc6 33.bxa5 Nxd4 34.Qe4 Rc5 35.Bf4 Ne6 36.Ng4 Rxa5 37.h3 Qf7
38.Be5 Bc5 39.Qe2 Qf5 40.Qd2 Ra8 41.Qe1 Qc2 42.Bd6 Qb3 43.Bxc5 Nxc5 44.Qe3 Nb7
45.Qd2 Rd8 46.Qe2 Nc5 47.Qe5 Nd3 48.Qg5 Ra8 49.Nf6+ Kf8 50.Nd7+ Kf7 51.Qf5+ Ke8
52.Nd5 Ra1+ 53.Kh2 Re1 54.N7b6 Qxb2 55.Qg6+ Kd8 56.Qc6 Rh1+ 57.Kxh1 Qc1+ 58.Qxc1
Nxc1 59.g4 Ke8 60.f4 Nd3 61.f5 Nc5 62.Kg2 Nb3 63.Kf3 Nd4+ 64.Kf4 Kf7 65.h4 Nb3
66.Nd7 Ke8 67.Ne5 Nd4 68.h5 Kf8 69.g5 Ne2+ 70.Kg4 Nc3 71.Nxc3 1-0
</pre>
=See also=
* [[Bookup]]
* [[Various Classifications#Fiction|Fiction]]
* [[GNU Chess]]
* [[Grandmaster Chess]]
* [[SCP]]
* [[Wasp]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=60550 Wasp 1.01 x64 by John Stanback released ...] by [[Frank Quisinsky]], [[CCC]], June 22, 2016</ref>
=Forum Posts=
==1989==
* [https://groups.google.com/d/msg/rec.games.chess/_5_aeOAu_tU/L-xvltCmClUJ Zarkov vs. Mach III (10 games)] by [[Stuart Cracraft]], [[Computer Chess Forums|rgc]], November 05, 1989 » [[Excel|Mach III]]
* [https://groups.google.com/d/msg/rec.games.chess/tojZQDUzb9A/d60hC_gJvjUJ Estimation of ZARKOV rating] by Teun Hendriks, [[Computer Chess Forums|rgc]], December 08, 1989
==1990 ...==
* [https://groups.google.com/d/msg/rec.games.chess/0EOSEpL1Wlk/RZXDB4jfpDQJ ZARKOV Info Wanted] by Louis Blair, [[Computer Chess Forums|rgc]], January 18, 1990
* [https://groups.google.com/d/msg/rec.games.chess/VMf_SsJNjQA/F_hYOr7Rm08J Zarkov at 'Championnat de Paris'] by Alain Le Borgne, [[Computer Chess Forums|rgc]], May 09, 1990
* [https://groups.google.com/d/msg/rec.games.chess/ppLgYSEF5k8/YCTdbmKwNTkJ Commercial Chess Programs] by [[Michael Valvo|Mike Valvo]], [[Computer Chess Forums|rgc]], July 19, 1991 » [[ChessMachine]], [[Fritz]], [[MChess]]
* [https://groups.google.com/d/msg/rec.games.chess/6v29esLp5do/3lSnz7AM35AJ even more chess software reviews] by [[Eric Schiller]], [[Computer Chess Forums|rgc]], September 13, 1991 » [[Bookup]]
* [https://groups.google.com/d/msg/rec.games.chess/PB9W_x8lX3g/yIxcWNvYV2QJ Zarkov vs GrandMaster Chess] by Roger Uzun, [[Computer Chess Forums|rgc]], October 16, 1992
* [https://groups.google.com/d/msg/rec.games.chess/Oe6AB_nRLGk/lR0ntgu6XYQJ Zarkov 3.0?] by Kevin Gowen, [[Computer Chess Forums|rgc]], December 18, 1993
* [https://groups.google.com/d/msg/rec.games.chess/uAFyT6PIdd0/tZrfVJpO1QUJ Chess Laboratories and Zarkov] by notes.tssi, [[Computer Chess Forums|rgc]], December 20, 1993
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/a9d5fb3e489196ed/68f9f93c938f3349 Hash table question] by [[John Stanback]], [[Computer Chess Forums|rgc]], March 23, 1994 » [[Transposition Table]]
==1995 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7edf36b54a47267d Draw by Repetition Code, post 4] by [[John Stanback]], [[Computer Chess Forums|rgcc]], December 31, 1996 » [[Repetitions]]
* [https://www.stmintz.com/ccc/index.php?id=22930 new zarkov 4.2 chess program] by Frank Zimmer, [[CCC]], July 25, 1998
* [https://www.stmintz.com/ccc/index.php?id=39629 Wchess 2000 and Zarkov 5] by Alain Lyrette, [[CCC]], January 16, 1999
: [https://www.stmintz.com/ccc/index.php?id=39662 Re: Wchess 2000 and Zarkov 5] by [[Berthold Seifriz|Bert Seifriz]], [[CCC]], January 16, 1999 » [[WChess]]
* [https://www.stmintz.com/ccc/index.php?id=43684 Zarkov 4.2 strength?] by Mike Cummings, [[CCC]], February 18, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=120143 Zarkov news?] by [[Fernando Villegas]], [[CCC]], July 18, 2000
* [https://www.stmintz.com/ccc/index.php?id=169742 1 Hour CCR Test/Zarkov and Duck/Updated Summary] by [[Peter Berger]], [[CCC]], May 14, 2001 » [[CCR One Hour Test]]
==2010 ...==
* [http://www.schachcomputer.info/forum/showthread.php?t=3531 Studie: Schachspielen mit ein 286er 12 MHz Laptop - Schachcomputer.info Community] by [[The Spacious Mind|Spacious Mind]], May 22, 2010 (German)
* [http://www.foro.meca-web.es/viewtopic.php?f=9&t=72&start=30#p4486 La Máquina Preservadora 5. John Stanback, Mr. Zarkov] by Luis a, [[Computer Chess Forums|Meca Foro]], March 21, 2014 (Spanish)
* [http://www.talkchess.com/forum/viewtopic.php?t=60479 Zarkov Chess by John Stanback] by [[Norbert Raimund Leisner]], [[CCC]], June 14, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=60512 Zarkov collection available ...] by [[Frank Quisinsky]], [[CCC]], June 16, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=64355 Zarkov 5 Millenium Chess System] by [[Norbert Raimund Leisner]], [[CCC]], June 21, 2017
=External Links=
==Chess Program==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=357 Zarkov's ICGA Tournaments]
* [http://john.stanback.net/zarkov/zarkov_history.html Zarkov Development History]
* [http://john.stanback.net/zarkov/zarkov_methods.html How Zarkov Plays Chess]
* [http://www.chessgames.com/perl/chessplayer?pid=27063 The chess games of Zarkov] from [http://www.chessgames.com/index.html chessgames.com]
* [http://www.top-5000.nl/cp.htm Free Chess Downloads] by [[Ed Schroder|Ed Schröder]]
==Misc==
* [https://en.wikipedia.org/wiki/Hans_Zarkov Hans Zarkov, fictional character from Wikipedia]
: [https://en.wikipedia.org/wiki/Flash_Gordon_%28serial%29 Flash Gordon (serial) from Wikipedia]
: [https://en.wikipedia.org/wiki/Frank_Shannon Frank Shannon from Wikipedia]
* [http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov Dr. Hans Zarkov - Flash Gordon Wiki]
: [http://flashgordon.wikia.com/wiki/Zarkov%27s_rocket_ship Zarkov's rocket ship - Flash Gordon Wiki]
=References=
<references />
'''[[Engines|Up one Level]]'''
[[FILE:101frankshannon.jpg|border|right|thumb|link=http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov|Dr. Zarkov <ref>[http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov Dr. Hans Zarkov - Flash Gordon Wiki], image courtesy [http://community.wikia.com/wiki/User:Toughpigs Danny Horn]</ref> ]]
'''Zarkov''',<br/>
a commercial chess program by [[John Stanback]] written in [[C]]. The first version in 1989 was similar to John's [[GNU Chess|GNU Chess 2.0]], but used other data structures based on [[0x88]] and run on [https://en.wikipedia.org/wiki/HP_9000 HP 9000] workstations or [[IBM PC|PCs]] with its own [[GUI]]. In 1990, John Stanback discovered a new [[Pruning|pruning technique]], a combination of [[Evaluation|evaluation heuristics]] and [[Reductions|reduced depth search]], which was implemented in Zarkov 2.5, also market as [[Grandmaster Chess]] <ref>[http://john.stanback.net/zarkov/zarkov_history.html Zarkov Development History]</ref>. Zarkov stores positions in which the [[Score|score]] changes significantly between a shallow search (about 2 plies) and a deeper search into a [[Persistent Hash Table|persistent hash table]], retrieved at the start of each game to make Zarkov remember positions from previous games in its search to avoid worse positions in advance <ref>[http://john.stanback.net/zarkov/zarkov_methods.html How Zarkov Plays Chess] 5. Learn Table</ref>.
=Screenshot=
[[FILE:zarkov.gif|none|border|text-bottom|link=http://www.septober.de/chess/index.htm]]
Zarkov DOS Screen <ref>[http://www.septober.de/chess/index.htm Septober - Computerschach] by [[Herbert Marquardt]]</ref>
=Windows=
A [[Windows]] [https://en.wikipedia.org/wiki/Dynamic_Data_Exchange DDE Server] Zarkov was used with the [[Bookup]] <ref>[http://www.bookup.com/ Bookup | Chess Openings | Chess Opening Software]</ref> and [[Chess Assistant]] database programs. The [[Chess Engine Communication Protocol]] compliant but unreleased Zarkov 4.5X played some private engine tournaments with promising results. The so far final version Zarkov 5.0 is a [[Windows]] [https://en.wikipedia.org/wiki/Dynamic-link_library DLL file] which was sold as an add-on engine for the [[Chess Genius|Millenium Genius 6]] aka [[Millennium Chess System]] interface <ref>[http://www.talkchess.com/forum/viewtopic.php?t=64355 Zarkov 5 Millenium Chess System] by [[Norbert Raimund Leisner]], [[CCC]], June 21, 2017</ref>.
=Tournament Play=
Zarkov played the [[WCCC 1989]], and the five late [[ACM North American Computer Chess Championship|ACM North American Computer Chess Championships]], [[ACM 1989]], [[ACM 1990]], [[ACM 1991]], [[ACM 1993]], and [[ACM 1994]] where Zarkov became runner up behind [[Deep Thought|Deep Thought II]]. It did quite well in the [[Aegon Tournaments]] held from 1994-1997, each time 4/6, and further played the [[BELCT 2001]] and [[CCT4]].
=Selected Games=
==ACM 1993==
[[ACM 1993]], round 3, [[HiTech|B*Hitech]] - [[Zarkov]] <ref> [http://www.csvn.nl/index.php?option=com_docman&task=cat_view&gid=60&Itemid=26&lang=en PGN Download NACCC] from [http://www.csvn.nl/index.php?option=com_docman&task=cat_view&gid=13&Itemid=26&lang=en Computerschaak/Downloads/Games] hosted by [[CSVN]]</ref>
<pre>
[Event "ACM 1993"]
[Site "Indianapolis USA"]
[Date "1993.02.15"]
[Round "3"]
[White "B*Hitech"]
[Black "Zarkov"]
[Result "0-1"]
1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Be3 Qf6 6.c3 Nge7 7.Qd2 a6 8.f4 d5 9.e5
Qh4+ 10.g3 Qh5 11.Bg2 Bh3 12.Bf3 Bg4 13.Bg2 Nxd4 14.Bxd4 Bxd4 15.cxd4 O-O 16.O-O
c6 17.Rf2 Rfe8 18.Nc3 Nf5 19.Na4 Re6 20.Nb6 Rae8 21.Qd3 Rg6 22.Rc1 Rh6 23.Bh1 Qg6
24.Na4 Ra8 25.Nc5 b6 26.Na4 b5 27.Nc5 a5 28.Rcf1 a4 29.Qc3 Rc8 30.Ra1 Re8 31.b3 a3
32.b4 Ra8 33.Nb3 Qe6 34.Na5 Rc8 35.Rd2 f6 36.Qxa3 fxe5 37.fxe5 Qd7 38.Rf1 Bh3 39.Rf4
Re8 40.Nb3 Qd8 41.Nc5 Rf8 42.Rdf2 g5 43.R4f3 Bg4 44.Rd3 Bh3 45.Qc1 Ng7 46.Rxf8+ Qxf8
47.Qd1 Ne6 48.Rf3 Qe8 49.Ra3 Qf8 50.Nxe6 Rxe6 51.g4 Rh6 52.Bf3 Qxb4 53.Ra6 Qc3 54.Kh1
Rg6 55.a3 Kh8 56.a4 Rg8 57.e6 Re8 58.Be2 Rxe6 59.axb5 Rxe2 60.Ra8+ Kg7 61.Ra7+ Kf6
62.Qf1+ Bxf1 63.Rf7+ Kxf7 64.Kg1 Bh3 65.bxc6 Qc1# 0-1
</pre>
==ACM 1994==
[[ACM 1994]], round 2, [[Cray Blitz]] - [[Zarkov]]
<pre>
[Event "ACM 1994"]
[Site "Cape May USA"]
[Date "1994.06.25"]
[Round "2"]
[White "Cray Blitz"]
[Black "Zarkov"]
[Result "0-1"]
1.e4 e5 2.Bc4 Nf6 3.d3 c6 4.Nf3 d5 5.Bb3 Bb4+ 6.Bd2 Bd6 7.exd5 cxd5 8.Nc3 Be6
9.O-O Nc6 10.Nb5 Bb8 11.Kh1 a6 12.Nc3 h6 13.a4 Bd6 14.Re1 O-O 15.Bc1 Qb6 16.Kg1
Rac8 17.Qe2 Rfe8 18.Qd1 Bc5 19.Rf1 Nd4 20.Nxd4 Bxd4 21.a5 Qa7 22.h3 Bxc3 23.bxc3
d4 24.c4 Bd7 25.Re1 Bc6 26.Ba3 Re6 27.Rb1 Nd7 28.Ba2 Rg6 29.f3 Re8 30.Bb4 Nf6
31.Bb3 Nh5 32.Bd2 Qc5 33.Ra1 Qe7 34.Kh2 Qh4 35.Rg1 Nf4 36.Bxf4 exf4 37.Ba4 Bxa4
38.Rxa4 Qf2 39.Qf1 Qxc2 40.Ra1 Re2 41.Rc1 Qxd3 42.Re1 Rge6 43.Rb1 Re7 44.c5 Qc2
45.Rc1 Qg6 46.Kh1 d3 47.Rb1 Qg3 0-1
</pre>
==BELCT 2001==
[[BELCT 2001]], round 7, [[Zarkov]] - [[Yace]] <ref>[https://www.stmintz.com/ccc/index.php?id=192011 BELCT 2001 discussion of the game zarkov-yace] by [[Uri Blass]], [[CCC]], October 05, 2001</ref>
<pre>
[Event "1.BELCT2001"]
[Site "Berlin"]
[Date "2001.10.03"]
[Round "7"]
[White "Zarkov 4.5T"]
[Black "Yace"]
[Result "1-0"]
1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Qb6 5.Nf3 Bd7 6.a3 a5 7.Bd3 Nc6 8.Bc2 Nh6 9.O-O cxd4
10.cxd4 Nf5 11.Bxf5 exf5 12.Nc3 Be6 13.Na4 Qa7 14.Be3 Be7 15.Rc1 Rc8 16.Qd3 O-O
17.Rfe1 Rfe8 18.Rc3 Nb8 19.Bg5 Bf8 20.Qb5 Bd7 21.Qxd5 h6 22.Rxc8 Rxc8 23.e6 fxe6
24.Rxe6 Kh8 25.Nc3 b5 26.Rg6 Bc6 27.Qe5 Qd7 28.Rxh6+ Kg8 29.Rxc6 Qxc6 30.Qxf5 b4
31.Ne5 Qe8 32.axb4 Nc6 33.bxa5 Nxd4 34.Qe4 Rc5 35.Bf4 Ne6 36.Ng4 Rxa5 37.h3 Qf7
38.Be5 Bc5 39.Qe2 Qf5 40.Qd2 Ra8 41.Qe1 Qc2 42.Bd6 Qb3 43.Bxc5 Nxc5 44.Qe3 Nb7
45.Qd2 Rd8 46.Qe2 Nc5 47.Qe5 Nd3 48.Qg5 Ra8 49.Nf6+ Kf8 50.Nd7+ Kf7 51.Qf5+ Ke8
52.Nd5 Ra1+ 53.Kh2 Re1 54.N7b6 Qxb2 55.Qg6+ Kd8 56.Qc6 Rh1+ 57.Kxh1 Qc1+ 58.Qxc1
Nxc1 59.g4 Ke8 60.f4 Nd3 61.f5 Nc5 62.Kg2 Nb3 63.Kf3 Nd4+ 64.Kf4 Kf7 65.h4 Nb3
66.Nd7 Ke8 67.Ne5 Nd4 68.h5 Kf8 69.g5 Ne2+ 70.Kg4 Nc3 71.Nxc3 1-0
</pre>
=See also=
* [[Bookup]]
* [[Various Classifications#Fiction|Fiction]]
* [[GNU Chess]]
* [[Grandmaster Chess]]
* [[SCP]]
* [[Wasp]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=60550 Wasp 1.01 x64 by John Stanback released ...] by [[Frank Quisinsky]], [[CCC]], June 22, 2016</ref>
=Forum Posts=
==1989==
* [https://groups.google.com/d/msg/rec.games.chess/_5_aeOAu_tU/L-xvltCmClUJ Zarkov vs. Mach III (10 games)] by [[Stuart Cracraft]], [[Computer Chess Forums|rgc]], November 05, 1989 » [[Excel|Mach III]]
* [https://groups.google.com/d/msg/rec.games.chess/tojZQDUzb9A/d60hC_gJvjUJ Estimation of ZARKOV rating] by Teun Hendriks, [[Computer Chess Forums|rgc]], December 08, 1989
==1990 ...==
* [https://groups.google.com/d/msg/rec.games.chess/0EOSEpL1Wlk/RZXDB4jfpDQJ ZARKOV Info Wanted] by Louis Blair, [[Computer Chess Forums|rgc]], January 18, 1990
* [https://groups.google.com/d/msg/rec.games.chess/VMf_SsJNjQA/F_hYOr7Rm08J Zarkov at 'Championnat de Paris'] by Alain Le Borgne, [[Computer Chess Forums|rgc]], May 09, 1990
* [https://groups.google.com/d/msg/rec.games.chess/ppLgYSEF5k8/YCTdbmKwNTkJ Commercial Chess Programs] by [[Michael Valvo|Mike Valvo]], [[Computer Chess Forums|rgc]], July 19, 1991 » [[ChessMachine]], [[Fritz]], [[MChess]]
* [https://groups.google.com/d/msg/rec.games.chess/6v29esLp5do/3lSnz7AM35AJ even more chess software reviews] by [[Eric Schiller]], [[Computer Chess Forums|rgc]], September 13, 1991 » [[Bookup]]
* [https://groups.google.com/d/msg/rec.games.chess/PB9W_x8lX3g/yIxcWNvYV2QJ Zarkov vs GrandMaster Chess] by Roger Uzun, [[Computer Chess Forums|rgc]], October 16, 1992
* [https://groups.google.com/d/msg/rec.games.chess/Oe6AB_nRLGk/lR0ntgu6XYQJ Zarkov 3.0?] by Kevin Gowen, [[Computer Chess Forums|rgc]], December 18, 1993
* [https://groups.google.com/d/msg/rec.games.chess/uAFyT6PIdd0/tZrfVJpO1QUJ Chess Laboratories and Zarkov] by notes.tssi, [[Computer Chess Forums|rgc]], December 20, 1993
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/a9d5fb3e489196ed/68f9f93c938f3349 Hash table question] by [[John Stanback]], [[Computer Chess Forums|rgc]], March 23, 1994 » [[Transposition Table]]
==1995 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7edf36b54a47267d Draw by Repetition Code, post 4] by [[John Stanback]], [[Computer Chess Forums|rgcc]], December 31, 1996 » [[Repetitions]]
* [https://www.stmintz.com/ccc/index.php?id=22930 new zarkov 4.2 chess program] by Frank Zimmer, [[CCC]], July 25, 1998
* [https://www.stmintz.com/ccc/index.php?id=39629 Wchess 2000 and Zarkov 5] by Alain Lyrette, [[CCC]], January 16, 1999
: [https://www.stmintz.com/ccc/index.php?id=39662 Re: Wchess 2000 and Zarkov 5] by [[Berthold Seifriz|Bert Seifriz]], [[CCC]], January 16, 1999 » [[WChess]]
* [https://www.stmintz.com/ccc/index.php?id=43684 Zarkov 4.2 strength?] by Mike Cummings, [[CCC]], February 18, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=120143 Zarkov news?] by [[Fernando Villegas]], [[CCC]], July 18, 2000
* [https://www.stmintz.com/ccc/index.php?id=169742 1 Hour CCR Test/Zarkov and Duck/Updated Summary] by [[Peter Berger]], [[CCC]], May 14, 2001 » [[CCR One Hour Test]]
==2010 ...==
* [http://www.schachcomputer.info/forum/showthread.php?t=3531 Studie: Schachspielen mit ein 286er 12 MHz Laptop - Schachcomputer.info Community] by [[The Spacious Mind|Spacious Mind]], May 22, 2010 (German)
* [http://www.foro.meca-web.es/viewtopic.php?f=9&t=72&start=30#p4486 La Máquina Preservadora 5. John Stanback, Mr. Zarkov] by Luis a, [[Computer Chess Forums|Meca Foro]], March 21, 2014 (Spanish)
* [http://www.talkchess.com/forum/viewtopic.php?t=60479 Zarkov Chess by John Stanback] by [[Norbert Raimund Leisner]], [[CCC]], June 14, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=60512 Zarkov collection available ...] by [[Frank Quisinsky]], [[CCC]], June 16, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=64355 Zarkov 5 Millenium Chess System] by [[Norbert Raimund Leisner]], [[CCC]], June 21, 2017
=External Links=
==Chess Program==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=357 Zarkov's ICGA Tournaments]
* [http://john.stanback.net/zarkov/zarkov_history.html Zarkov Development History]
* [http://john.stanback.net/zarkov/zarkov_methods.html How Zarkov Plays Chess]
* [http://www.chessgames.com/perl/chessplayer?pid=27063 The chess games of Zarkov] from [http://www.chessgames.com/index.html chessgames.com]
* [http://www.top-5000.nl/cp.htm Free Chess Downloads] by [[Ed Schroder|Ed Schröder]]
==Misc==
* [https://en.wikipedia.org/wiki/Hans_Zarkov Hans Zarkov, fictional character from Wikipedia]
: [https://en.wikipedia.org/wiki/Flash_Gordon_%28serial%29 Flash Gordon (serial) from Wikipedia]
: [https://en.wikipedia.org/wiki/Frank_Shannon Frank Shannon from Wikipedia]
* [http://flashgordon.wikia.com/wiki/Dr._Hans_Zarkov Dr. Hans Zarkov - Flash Gordon Wiki]
: [http://flashgordon.wikia.com/wiki/Zarkov%27s_rocket_ship Zarkov's rocket ship - Flash Gordon Wiki]
=References=
<references />
'''[[Engines|Up one Level]]'''
