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ParSOS

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Created page with "'''Home * Engines * ParSOS''' '''ParSOS''', (Parallel SOS)<br/> the parallel version of Rudolf Huber's MTD(f) searc..."
'''[[Main Page|Home]] * [[Engines]] * ParSOS'''

'''ParSOS''', (Parallel SOS)<br/>
the [[Parallel Search|parallel]] version of [[Rudolf Huber|Rudolf Huber's]] [[MTD(f)]] searcher [[SOS]], written in [[C]]. ParSOS played the [[WMCCC 2001]], [[WCCC 2002]], [[WCCC 2003]], [[WCCC 2004]] and the [[WCCC 2006]] [[World Microcomputer Chess Championship|World Microcomputer Chess]] and [[World Computer Chess Championship|World Computer Chess Championships]], the [[Chess960CWC 2005]] and [[Chess960CWC 2006]] [[Livingston Chess960 Computer World Championship|Livingston Chess960 Computer World Championships]], and the [[IPCCC 2004]] and [[IPCCC 2007]]. According to a [[CCC]] discussion with [[Dieter Bürßner]] <ref>[https://www.stmintz.com/ccc/index.php?id=163888 Parallel algorithms in chess programming] by [[Dieter Bürßner]], [[CCC]], April 16, 2001</ref> and [[Vincent Diepeveen]] <ref>[https://www.stmintz.com/ccc/index.php?id=163895 Re: Parallel algorithms in chess programming] by [[Vincent Diepeveen]], [[CCC]], April 16, 2001</ref> involved, ParSOS uses a kind of [[ABDADA]] to parallelize MTD(f), utilizing a [[Shared Hash Table]].

=Photos & Games=
[[FILE:RudolfHuberSteffenJacob.jpg|none|border|text-bottom|580px]]
[[WCCC 2003]], [[Rudolf Huber]] and [[Steffen A. Jakob]] <ref>[http://www.chessbase.de/nachrichten.asp?newsid=2635 Brutus auf WM-Kurs?] by [[Peter Schreiner]], [[ChessBase|ChessBase News]], November 24, 2003 (German)</ref>, round 4, [[ParSOS]] - [[Hossa]] <ref>[https://www.stmintz.com/ccc/index.php?id=330155 WCCC (4) ParSOS vs Hossa (1-0) PGN] by [[Kurt Utzinger]], [[CCC]], November 24, 2003</ref>
<pre>
[Event "WCCC 2003"]
[Site "Graz"]
[Date "2003.11.24"]
[Round "4"]
[White "ParSOS"]
[Black "Hossa"]
[Result "1-0"]

1.c4 e5 2.g3 Nf6 3.Bg2 d5 4.cxd5 Nxd5 5.Nf3 Nc6 6.O-O Nb6 7.Nc3 Be7 8.d3 O-O
9.Be3 Be6 10.Rc1 Nd5 11.d4 exd4 12.Bxd4 Nxc3 13.Bxc3 Bxa2 14.Qa4 Be6 15.Rfd1
Qc8 16.Nd2 Rd8 17.Nc4 Bd7 18.Ne3 Bg5 19.f4 Be7 20.Kh1 Bc5 21.Nd5 Bd6 22.Qc2
Bf5 23.e4 Bg4 24.Rd2 Be6 25.e5 Bc5 26.Be4 Bxd5 27.Rxd5 Rxd5 28.Bxd5 Qd7 29.Rd1
Rd8 30.Qe4 Kh8 31.f5 Qe7 32.Rf1 Nb4 33.f6 gxf6 34.Bb3 c6 35.Rf5 Nd5 36.Rh5 f5
37.Qxf5 f6 38.exf6 1-0
</pre>

=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=163888 Parallel algorithms in chess programming] by [[Dieter Bürßner]], [[CCC]], April 16, 2001 » [[ABDADA]], [[Parallel Search]]
* [https://www.stmintz.com/ccc/index.php?id=364169 CI 89 and Combinations from Graz 2003 - Parsos/DJ & List/Shredder] by [[Michael Byrne|Mike Byrne]], May 08, 2004

=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=21 SOS' ICGA Tournaments] includes ParSOS
* [http://www.chessgames.com/player/parsos_%28computer%29.html The chess games of ParSOS] from [http://www.chessgames.com/index.html chessgames.com]
* [http://www.playwitharena.com/?Newsticker:Archive_9 Interview with SOS programmer Rudolf Huber in German language!] by [[Frank Quisinsky]], [[Arena|Arena Chess GUI 3.0]] - Archive 9, 132, May 10, 2005

=References=
<references />
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