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'''[[Main Page|Home]] * [[Engines]] * HIARCS'''
[[FILE:HCE-main3.jpg|border|right|thumb|480px|http://www.hiarcs.com/pc-chess-explorer.htm| Deep HIARCS 14 WCSC with [[HIARCS Chess Explorer]] <ref>[http://www.hiarcs.com/pc-chess-explorer.htm PC Chess Software - HIARCS Chess Explorer download]</ref> ]]
'''HIARCS''' (Hiarcs),<br/>
a chess engine written by [[Mark Uniacke]]. HIARCS is an acronym for Higher Intelligence Auto Response Chess System, and its history of development lasts over 30 years now. Because HIARCS is written portable in [[C]], it is available for multiple platforms such as [https://en.wikipedia.org/wiki/Pocket_PC Pocket PC], [https://en.wikipedia.org/wiki/Palm_%28PDA%29 Palm], [[Apple]] [[iPhone]] & [[iPod Touch]], [https://en.wikipedia.org/wiki/Personal_digital_assistant PDAs], [[IBM PC|PC]] and [[Macintosh]] computers.
HIARCS [[Opening Book Authors|opening book authors]] over the time were [[Eric Hallsworth]], [[Sebastian Böhme]] and [[Harvey Williamson]], who is also operating HIARCS regular at various computer chess tournaments. HIARCS won the Gold medal at the [[4th Computer Olympiad#Chess|4th Computer Olympiad 1992]] in [https://en.wikipedia.org/wiki/London London], the [[WMCCC 1993]] in [https://en.wikipedia.org/wiki/Munich Munich], the [[IPCCC 2007]], after the [[Rybka]] [[World Computer Chess Championship#RybkaDisqualification|disqualification]] in 2011, the [[WCCC 2008]] in [https://en.wikipedia.org/wiki/Beijing Beijing], the [[ICT 2009]], the [[WCSC 2011]] in [https://en.wikipedia.org/wiki/Tilburg Tilburg], the [[WCSC 2013]] in [https://en.wikipedia.org/wiki/Yokohama Yokohama] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]</ref>, and the [[PT 51]].
=History=
==Basic==
The very first version of HIARCS was already written 1980 in [[PDP-11]] [[Basic]], when Mark was a 15 year old schoolboy <ref>[http://www.hiarcs.com/beginning.htm HIARCS: Where It All Began]</ref> . Subsequent versions (5 aka 0.5) were still written in interpreted Basic as well, and to compensate that speed disadvantage, HIARCS used to be smart rather than fast. [[Mark Uniacke]] from ''Now Walking, 1982-1983: HIARCS 5'' <ref>[http://www.hiarcs.com/nowwalking.htm Now Walking, 1982-1983: HIARCS 5]</ref> :
The inspiration for the new HIARCS search was sought from the book [[Chess Skill in Man and Machine]] and in particular the article "The heuristic search: An alternative to the alpha-beta minimax procedure" by [[Larry Harris]] from [[Dartmouth College]] <ref>[[Larry Harris]] ('''1974'''). ''Heuristic Search under Conditions of Error''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_(journal) Artificial Intelligence], Vol. 5, No. 3, also as ('''1977'''). ''The heuristic search: An alternative to the alpha-beta minimax procedure.'' [[Chess Skill in Man and Machine]]</ref> . HIARCS was still written in the relatively primitive [[BASIC]] programming language and being interpreted it meant the program was rather slow. To compensate for this I developed some heuristics to help guide the search and evaluation in a more targeted way.
==C==
[[FILE:hiaclassic.jpg|border|right|thumb|link=http://www.thorstenczub.de/hiarcs.html|HIARCS 1 for [[MS-DOS]], 1991 <ref>[http://www.thorstenczub.de/hiarcs.html HIARCS Fan Page] by [[Thorsten Czub]]</ref> , download from the HIARCS site <ref>[http://www.hiarcs.com/freechess.htm Free HIARCS Chess Software Programs]</ref> ]]
End of the 80s HIARCS was rewritten in [[C]]. In 1991 HIARCS '''1.0''' was released for [[IBM PC|PCs]] and the [[MS-DOS]] operatig system. Subsequent Hiacs versions were compiled to run under various processors and operating systems, such as [[x86]] and [[PowerPC]] under [[Windows]] and [[Mac OS]], as well as mobile devices.
=Achievements=
The rewritten HIARCS soon competed in [[Tournaments|computer chess tournaments]], in 1989 the [[1st Computer Olympiad#Chess|1st Computer Olympiad]], and the [[WMCCC 1991]] in [https://en.wikipedia.org/wiki/Vancouver Vancouver] where HIARCS won the title of the ''World Amateur Microcomputer Chess Champion''. HIARCS won the gold medal (shared) at the [[4th Computer Olympiad#Chess|4th Computer Olympiad]], and became [[World Microcomputer Chess Championship|World Microcomputer Chess Software Champion]] at the [[WMCCC 1993]] in [https://en.wikipedia.org/wiki/Munich Munich]. HIARCS won several other tournaments or got top rankings, it won the [[IPCCC 2007]], after [[Rybka|Rybka's ]] [[World Computer Chess Championship#RybkaDisqualification|disqualification]] in June 2011 the [[WCCC 2008]], and the [[ICT 2009]] <ref>[http://www.hiarcs.com/hiarcs_milestones.htm HIARCS Milestone Achievements]</ref>. Further, HIARCS is two time [[World Chess Software Championship|World Chess Software Champion]], succeeding at the [[WCSC 2011]] in [https://en.wikipedia.org/wiki/Tilburg Tilburg], and the [[WCSC 2013]] in [https://en.wikipedia.org/wiki/Yokohama Yokohama].
=Man-Machine=
* [[Aegon 1997]]
* [[Bareev versus HIARCS 2003]]
=Descriptions=
from the [[ICGA]] tournament site <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]</ref> :
==1999==
HIARCS is written entirely in 'C' on a very spare time basis.
HIARCS searches around an order of magnitude less positions per second (av. 18,000) than most of its competitors. However, it makes up for this apparent slow speed by clever searching and accurate evaluation. HIARCS uses many selective search extension heuristics to guide the search and incorporates a sophisticated tapered search to resolve tactical uncertainties while finding positionally beneficial lines.
HIARCS won the title of World Microcomputer Chess Software Champion in [[WMCCC 1993|1993 in Munich]], Germany and has won numerous other computer and human tournaments. HIARCS 7.0 is currently the top rated chess program on the [[SSDF]] and [[Selective Search]] rating lists.
In April 1997, HIARCS 6.0 became the first PC chess program to win a match played at tournament time controls over a [[FIDE]] International Master. This great achievement was further built on when HIARCS won the [https://en.wikipedia.org/wiki/Bad_Godesberg Godesberg] Open ahead of Grandmasters and International Masters.
The version competing in this tournament is a new experimental version. The program will be a 32bit [[Windows]] version of HIARCS and will support [[Endgame Tablebases|tablebases]]. It is expected that all 4 piece and most 5 piece endgame tablebases will be available.
==2008==
HIARCS is one of the few original PC chess programs still competing in top level chess competition. It has been in development over the last twenty years and since 1991 has always been among the top chess programs in the world. In this time it has led world computer rating lists and won World Championship titles. It was the first PC chess program to defeat a FIDE International Master in a match and has been a favourite of a number of World Chess Champions. So much so that [https://en.wikipedia.org/wiki/Garry_Kasparov Garry Kasparov] said towards the end of [[Kasparov versus Deep Blue 1997|his match]] with [[Deep Blue|Deep Blue2]] that "HIARCS is much better positionally than Deep Blue". HIARCS is available on a number of platforms including PC, Macintosh and handheld devices. The handheld Palm version has won multiple matches against GMs and even won a GM/IM tournament in the Philippines. HIARCS' playing style is now very aggressive with a distinctive liking for attacking the opponent's king. This often leads to dynamic exciting games which are often played on a knife-edge. HIARCS is now capable of taking advantage of multi-processors/cores to improve its chess performance making it a very dangerous opponent.
=Commerce=
HIARCS is commercially available since 1991. PC- and [[Windows]] versions until 12.0 were market as [[ChessBase]] engine in conjunction with the [[Fritz#FritzGUI|Fritz GUI]] <ref>[http://www.chessbase.com/shop/productlist.asp?product=cp&subd=HIARCS ChessBase Shop - HIARCS 12] from [[ChessBase]]</ref> , ''PC Chess HIARCS 13 UCI'' is purchased as download product from its own site <ref>[http://www.hiarcs.com/pc_chess_hiarcs.htm HIARCS for PC Chess Software]</ref> , and requires a [[Windows]] PC and an external [[GUI]] supporting the [[UCI]] protocol. HIARCS 12.1 and 13 are the chess engines of [[Fritz#PocketFritz|Pocket Fritz]] by [[ChessBase]] <ref>[http://www.hiarcs.com/news.htm HIARCS Chess Software: What's New]</ref> <ref>[https://en.wikipedia.org/wiki/HIARCS#HIARCS_13_.282009.29 HIARCS from Wikipedia]</ref> .
=Chess Explorer=
Since August 2012, HIARCS has its own [[GUI]]. The [[HIARCS Chess Explorer]] is bundled with HIARCS 14, based on the program which won the [[WCSC 2011]], and can further be used with any [[UCI]] compatible chess engine <ref>[http://www.hiarcs.com/chess-explorer.htm HIARCS Chess Explorer - World class chess database and chess playing program]</ref> .
=Release Dates=
* HIARCS 1 : 1992
* HIARCS 2 : 1993
* HIARCS 2.1 : 1993
* HIARCS 3 : 1994
* HIARCS 4 : 1995
* HIARCS 5 : 1996
* HIARCS 6 : 1997
* HIARCS 7 : 1998
* HIARCS 7.32 : 1999
* HIARCS 8 : 2002
* HIARCS 9: 2003
* HIARCS 9.6 : 2004
* HIARCS 10 : 2005
* HIARCS X50 :
* HIARCS X54 :
* HIARCS 11 : 2006
* HIARCS 11.1 : 2007
* HIARCS 11.2 : 2007
* HIARCS Paderborn 2007-12
* HIARCS 12.1 : 2008
* HIARCS 13 : 2009
* HIARCS 13.1 : 2010
* HIARCS 13.2 : 2010
* HIARCS 14 : 2011
[[FILE:hiarcs14.gif|none|border|text-bottom|800px]]
HIARCS [[Playing Strength|Chess Strength]] <ref>[http://www.hiarcs.com/hiarcs_info.htm HIARCS Chess Strength - from the official HIARCS site]</ref>
=See also=
* [[Knowledge#SearchVersusEvaluation|Knowledge | Search versus Evaluation]]
=Publictions=
* [[Eric Hallsworth]] ('''1992'''). ''HIARCS for PC's''. [[Selective Search]] 43, pp. 2, [http://www.chesscomputeruk.com/SS_43.pdf pdf] hosted by [[Mike Watters]]
* [[Jan van Reek]], [[Jos Uiterwijk]] ('''2003'''). ''The Match Bareev vs. HIARCS X''. [[ICGA Journal#26_1|ICGA Journal, Vol. 26, No. 1]] » [[Bareev versus HIARCS 2003]]
* [[Eric Hallsworth]] ('''2003'''). ''HIARCS 8X v Evgeny Bareev''. [[Selective Search]] 104, pp. 20, [http://www.chesscomputeruk.com/SS_104.pdf pdf] hosted by [[Mike Watters]]
* [[Eric Hallsworth]] ('''2003'''). ''HIARCS 8X v Evgeny Bareev - The Final Game''. [[Selective Search]] 105, pp. 11, [http://www.chesscomputeruk.com/SS_105.pdf pdf] hosted by [[Mike Watters]]
* [[Thorsten Czub]] ('''2003'''). ''Mark Uniacke interviewed - Programming HIARCS 9''. [[Selective Search]] 108, pp. 12, [http://www.chesscomputeruk.com/SS_108.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
==1993 ...==
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/5e54bae88f6b6eb1 Challenger to MCh/CG] by [[Mark Uniacke]], [[Computer Chess Forums|rec.games.chess]], August 25, 1993
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/51267e26536fa912 QMW computer chess] by [[Don Beal]], [[Computer Chess Forums|rec.games.chess]], August 19, 1993 » [[UPCCC 1993]]
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/58dba369aec90ce6/027edb10614a55fc HIARCS 2.0 Chess Program] by Bryant Fujimoto, [[Computer Chess Forums|rec.games.chess]], December 5, 1993
==1995 ...==
* [https://groups.google.com/d/msg/rec.games.chess.computer/Pr3v1IamqT0/wdbB8PnDYEgJ Announcing HIARCS 4.0 for PC and MAC] by [[Mark Uniacke]], [[Computer Chess Forums|rgcc]], December 19, 1995
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/1ebbee2bcc0ae853 Hiarchs Mac: First Impressions] by [[Eric Schiller]], [[Computer Chess Forums|rgcc]], January 27, 1996
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/cc9d40ca3989dfac HIARCS 5 Maximum Search Depth] by Kevin Miller, [[Computer Chess Forums|rgcc]], January 7, 1997
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/49e5507bd20aa3ca AEGON 97/ 1st round: HIARCS lost] by Enrico, [[Computer Chess Forums|rgcc]], April 16, 1997
* [https://groups.google.com/d/msg/rec.games.chess.computer/8T8Vu5RExFs/ly4pvg-ihg4J [REVIEW] HIARCS 6.0 Macintosh (long)] by Richard A. Fowell, [[Computer Chess Forums|rgcc]], December 12, 1997
* [https://www.stmintz.com/ccc/index.php?id=13605 LCT II results of Reb9, F5, and H6 on K6/233] by [[Albert Silver]], [[CCC]], January 03, 1998 » [[LCT II]], [[Rebel]], [[Fritz]]
* [https://www.stmintz.com/ccc/index.php?id=18139 Horrible move!] by [[Tony Hedlund]], [[CCC]], May 07, 1998 » [[Fifty-move Rule]]
==2000 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=12843 HIARCS 11.1 SP / MP Macintosh has arrived!] by rafowell, [[CCC]], Apr 03, 2007 » [[Macintosh]]
* [http://www.hiarcs.net/forums/viewtopic.php?p=2944 Re: Search or Evaluation?] by [[Mark Uniacke]], [[Computer Chess Forums|HIARCS Forum]], October 14, 2007
* [http://www.hiarcs.net/forums/viewtopic.php?t=1677 World Computer Chess Championship 2008 HIARCS wins!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], September 06, 2008 » [[WCCC 2008]]
: [http://hiarcs.net/forums/viewtopic.php?t=1677&postdays=0&postorder=asc&start=180 World Computer Chess Championship 2008 HIARCS wins!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], December 16, 2011
==2010 ...==
* [http://www.hiarcs.net/forums/viewtopic.php?t=4550 World Computer Software Championship 2011 - HIARCS wins!!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], November 26, 2011 » [[WCSC 2011]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=6024 HIARCS World Computer Software Champion 2013!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], June 04, 2013 » [[WCSC 2013]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=7961 The Future of HIARCS] by [[Fernando Villegas]], [[Computer Chess Forums|HIARCS Forum]], July 05, 2016 » [[WCCC 2016]], [[WCSC 2016]]
=External Links=
* [http://www.hiarcs.com/ HIARCS Chess Software for PC, Mac, Pocket PC, iPhone, iPod and Palm Chess]
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]
* [https://en.wikipedia.org/wiki/HIARCS HIARCS from Wikipedia]
* [http://www.thorstenczub.de/hiarcs.html HIARCS Fan Page] by [[Thorsten Czub]]
* [http://www.thorstenczub.de/hiarcs9.html HIARCS 9] by [[Thorsten Czub]]
* [http://chessbase.com/newsdetail.asp?newsid=7069 HIARCS 13 – the Professional Openings Book] by [[Mark Uniacke]], [[ChessBase|ChessBase New]], March 10, 2011 » [[Opening Book]]
* [http://dentonchessclub.co.uk/wp/?p=358 HIARCS King March – Brilliancy Prize? | Denton Chess Club Blog] by [[Ivan Urwin]], October 14, 2013 » [[TCEC Season 5]]
* [http://www.hiarcs.net/forums/ HIARCS Forum]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:UCI]]
[[Category:DosEngine]]
[[Category:Mac]]
[[FILE:HCE-main3.jpg|border|right|thumb|480px|http://www.hiarcs.com/pc-chess-explorer.htm| Deep HIARCS 14 WCSC with [[HIARCS Chess Explorer]] <ref>[http://www.hiarcs.com/pc-chess-explorer.htm PC Chess Software - HIARCS Chess Explorer download]</ref> ]]
'''HIARCS''' (Hiarcs),<br/>
a chess engine written by [[Mark Uniacke]]. HIARCS is an acronym for Higher Intelligence Auto Response Chess System, and its history of development lasts over 30 years now. Because HIARCS is written portable in [[C]], it is available for multiple platforms such as [https://en.wikipedia.org/wiki/Pocket_PC Pocket PC], [https://en.wikipedia.org/wiki/Palm_%28PDA%29 Palm], [[Apple]] [[iPhone]] & [[iPod Touch]], [https://en.wikipedia.org/wiki/Personal_digital_assistant PDAs], [[IBM PC|PC]] and [[Macintosh]] computers.
HIARCS [[Opening Book Authors|opening book authors]] over the time were [[Eric Hallsworth]], [[Sebastian Böhme]] and [[Harvey Williamson]], who is also operating HIARCS regular at various computer chess tournaments. HIARCS won the Gold medal at the [[4th Computer Olympiad#Chess|4th Computer Olympiad 1992]] in [https://en.wikipedia.org/wiki/London London], the [[WMCCC 1993]] in [https://en.wikipedia.org/wiki/Munich Munich], the [[IPCCC 2007]], after the [[Rybka]] [[World Computer Chess Championship#RybkaDisqualification|disqualification]] in 2011, the [[WCCC 2008]] in [https://en.wikipedia.org/wiki/Beijing Beijing], the [[ICT 2009]], the [[WCSC 2011]] in [https://en.wikipedia.org/wiki/Tilburg Tilburg], the [[WCSC 2013]] in [https://en.wikipedia.org/wiki/Yokohama Yokohama] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]</ref>, and the [[PT 51]].
=History=
==Basic==
The very first version of HIARCS was already written 1980 in [[PDP-11]] [[Basic]], when Mark was a 15 year old schoolboy <ref>[http://www.hiarcs.com/beginning.htm HIARCS: Where It All Began]</ref> . Subsequent versions (5 aka 0.5) were still written in interpreted Basic as well, and to compensate that speed disadvantage, HIARCS used to be smart rather than fast. [[Mark Uniacke]] from ''Now Walking, 1982-1983: HIARCS 5'' <ref>[http://www.hiarcs.com/nowwalking.htm Now Walking, 1982-1983: HIARCS 5]</ref> :
The inspiration for the new HIARCS search was sought from the book [[Chess Skill in Man and Machine]] and in particular the article "The heuristic search: An alternative to the alpha-beta minimax procedure" by [[Larry Harris]] from [[Dartmouth College]] <ref>[[Larry Harris]] ('''1974'''). ''Heuristic Search under Conditions of Error''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_(journal) Artificial Intelligence], Vol. 5, No. 3, also as ('''1977'''). ''The heuristic search: An alternative to the alpha-beta minimax procedure.'' [[Chess Skill in Man and Machine]]</ref> . HIARCS was still written in the relatively primitive [[BASIC]] programming language and being interpreted it meant the program was rather slow. To compensate for this I developed some heuristics to help guide the search and evaluation in a more targeted way.
==C==
[[FILE:hiaclassic.jpg|border|right|thumb|link=http://www.thorstenczub.de/hiarcs.html|HIARCS 1 for [[MS-DOS]], 1991 <ref>[http://www.thorstenczub.de/hiarcs.html HIARCS Fan Page] by [[Thorsten Czub]]</ref> , download from the HIARCS site <ref>[http://www.hiarcs.com/freechess.htm Free HIARCS Chess Software Programs]</ref> ]]
End of the 80s HIARCS was rewritten in [[C]]. In 1991 HIARCS '''1.0''' was released for [[IBM PC|PCs]] and the [[MS-DOS]] operatig system. Subsequent Hiacs versions were compiled to run under various processors and operating systems, such as [[x86]] and [[PowerPC]] under [[Windows]] and [[Mac OS]], as well as mobile devices.
=Achievements=
The rewritten HIARCS soon competed in [[Tournaments|computer chess tournaments]], in 1989 the [[1st Computer Olympiad#Chess|1st Computer Olympiad]], and the [[WMCCC 1991]] in [https://en.wikipedia.org/wiki/Vancouver Vancouver] where HIARCS won the title of the ''World Amateur Microcomputer Chess Champion''. HIARCS won the gold medal (shared) at the [[4th Computer Olympiad#Chess|4th Computer Olympiad]], and became [[World Microcomputer Chess Championship|World Microcomputer Chess Software Champion]] at the [[WMCCC 1993]] in [https://en.wikipedia.org/wiki/Munich Munich]. HIARCS won several other tournaments or got top rankings, it won the [[IPCCC 2007]], after [[Rybka|Rybka's ]] [[World Computer Chess Championship#RybkaDisqualification|disqualification]] in June 2011 the [[WCCC 2008]], and the [[ICT 2009]] <ref>[http://www.hiarcs.com/hiarcs_milestones.htm HIARCS Milestone Achievements]</ref>. Further, HIARCS is two time [[World Chess Software Championship|World Chess Software Champion]], succeeding at the [[WCSC 2011]] in [https://en.wikipedia.org/wiki/Tilburg Tilburg], and the [[WCSC 2013]] in [https://en.wikipedia.org/wiki/Yokohama Yokohama].
=Man-Machine=
* [[Aegon 1997]]
* [[Bareev versus HIARCS 2003]]
=Descriptions=
from the [[ICGA]] tournament site <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]</ref> :
==1999==
HIARCS is written entirely in 'C' on a very spare time basis.
HIARCS searches around an order of magnitude less positions per second (av. 18,000) than most of its competitors. However, it makes up for this apparent slow speed by clever searching and accurate evaluation. HIARCS uses many selective search extension heuristics to guide the search and incorporates a sophisticated tapered search to resolve tactical uncertainties while finding positionally beneficial lines.
HIARCS won the title of World Microcomputer Chess Software Champion in [[WMCCC 1993|1993 in Munich]], Germany and has won numerous other computer and human tournaments. HIARCS 7.0 is currently the top rated chess program on the [[SSDF]] and [[Selective Search]] rating lists.
In April 1997, HIARCS 6.0 became the first PC chess program to win a match played at tournament time controls over a [[FIDE]] International Master. This great achievement was further built on when HIARCS won the [https://en.wikipedia.org/wiki/Bad_Godesberg Godesberg] Open ahead of Grandmasters and International Masters.
The version competing in this tournament is a new experimental version. The program will be a 32bit [[Windows]] version of HIARCS and will support [[Endgame Tablebases|tablebases]]. It is expected that all 4 piece and most 5 piece endgame tablebases will be available.
==2008==
HIARCS is one of the few original PC chess programs still competing in top level chess competition. It has been in development over the last twenty years and since 1991 has always been among the top chess programs in the world. In this time it has led world computer rating lists and won World Championship titles. It was the first PC chess program to defeat a FIDE International Master in a match and has been a favourite of a number of World Chess Champions. So much so that [https://en.wikipedia.org/wiki/Garry_Kasparov Garry Kasparov] said towards the end of [[Kasparov versus Deep Blue 1997|his match]] with [[Deep Blue|Deep Blue2]] that "HIARCS is much better positionally than Deep Blue". HIARCS is available on a number of platforms including PC, Macintosh and handheld devices. The handheld Palm version has won multiple matches against GMs and even won a GM/IM tournament in the Philippines. HIARCS' playing style is now very aggressive with a distinctive liking for attacking the opponent's king. This often leads to dynamic exciting games which are often played on a knife-edge. HIARCS is now capable of taking advantage of multi-processors/cores to improve its chess performance making it a very dangerous opponent.
=Commerce=
HIARCS is commercially available since 1991. PC- and [[Windows]] versions until 12.0 were market as [[ChessBase]] engine in conjunction with the [[Fritz#FritzGUI|Fritz GUI]] <ref>[http://www.chessbase.com/shop/productlist.asp?product=cp&subd=HIARCS ChessBase Shop - HIARCS 12] from [[ChessBase]]</ref> , ''PC Chess HIARCS 13 UCI'' is purchased as download product from its own site <ref>[http://www.hiarcs.com/pc_chess_hiarcs.htm HIARCS for PC Chess Software]</ref> , and requires a [[Windows]] PC and an external [[GUI]] supporting the [[UCI]] protocol. HIARCS 12.1 and 13 are the chess engines of [[Fritz#PocketFritz|Pocket Fritz]] by [[ChessBase]] <ref>[http://www.hiarcs.com/news.htm HIARCS Chess Software: What's New]</ref> <ref>[https://en.wikipedia.org/wiki/HIARCS#HIARCS_13_.282009.29 HIARCS from Wikipedia]</ref> .
=Chess Explorer=
Since August 2012, HIARCS has its own [[GUI]]. The [[HIARCS Chess Explorer]] is bundled with HIARCS 14, based on the program which won the [[WCSC 2011]], and can further be used with any [[UCI]] compatible chess engine <ref>[http://www.hiarcs.com/chess-explorer.htm HIARCS Chess Explorer - World class chess database and chess playing program]</ref> .
=Release Dates=
* HIARCS 1 : 1992
* HIARCS 2 : 1993
* HIARCS 2.1 : 1993
* HIARCS 3 : 1994
* HIARCS 4 : 1995
* HIARCS 5 : 1996
* HIARCS 6 : 1997
* HIARCS 7 : 1998
* HIARCS 7.32 : 1999
* HIARCS 8 : 2002
* HIARCS 9: 2003
* HIARCS 9.6 : 2004
* HIARCS 10 : 2005
* HIARCS X50 :
* HIARCS X54 :
* HIARCS 11 : 2006
* HIARCS 11.1 : 2007
* HIARCS 11.2 : 2007
* HIARCS Paderborn 2007-12
* HIARCS 12.1 : 2008
* HIARCS 13 : 2009
* HIARCS 13.1 : 2010
* HIARCS 13.2 : 2010
* HIARCS 14 : 2011
[[FILE:hiarcs14.gif|none|border|text-bottom|800px]]
HIARCS [[Playing Strength|Chess Strength]] <ref>[http://www.hiarcs.com/hiarcs_info.htm HIARCS Chess Strength - from the official HIARCS site]</ref>
=See also=
* [[Knowledge#SearchVersusEvaluation|Knowledge | Search versus Evaluation]]
=Publictions=
* [[Eric Hallsworth]] ('''1992'''). ''HIARCS for PC's''. [[Selective Search]] 43, pp. 2, [http://www.chesscomputeruk.com/SS_43.pdf pdf] hosted by [[Mike Watters]]
* [[Jan van Reek]], [[Jos Uiterwijk]] ('''2003'''). ''The Match Bareev vs. HIARCS X''. [[ICGA Journal#26_1|ICGA Journal, Vol. 26, No. 1]] » [[Bareev versus HIARCS 2003]]
* [[Eric Hallsworth]] ('''2003'''). ''HIARCS 8X v Evgeny Bareev''. [[Selective Search]] 104, pp. 20, [http://www.chesscomputeruk.com/SS_104.pdf pdf] hosted by [[Mike Watters]]
* [[Eric Hallsworth]] ('''2003'''). ''HIARCS 8X v Evgeny Bareev - The Final Game''. [[Selective Search]] 105, pp. 11, [http://www.chesscomputeruk.com/SS_105.pdf pdf] hosted by [[Mike Watters]]
* [[Thorsten Czub]] ('''2003'''). ''Mark Uniacke interviewed - Programming HIARCS 9''. [[Selective Search]] 108, pp. 12, [http://www.chesscomputeruk.com/SS_108.pdf pdf] hosted by [[Mike Watters]]
=Forum Posts=
==1993 ...==
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/5e54bae88f6b6eb1 Challenger to MCh/CG] by [[Mark Uniacke]], [[Computer Chess Forums|rec.games.chess]], August 25, 1993
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/51267e26536fa912 QMW computer chess] by [[Don Beal]], [[Computer Chess Forums|rec.games.chess]], August 19, 1993 » [[UPCCC 1993]]
* [http://groups.google.com/group/rec.games.chess/browse_frm/thread/58dba369aec90ce6/027edb10614a55fc HIARCS 2.0 Chess Program] by Bryant Fujimoto, [[Computer Chess Forums|rec.games.chess]], December 5, 1993
==1995 ...==
* [https://groups.google.com/d/msg/rec.games.chess.computer/Pr3v1IamqT0/wdbB8PnDYEgJ Announcing HIARCS 4.0 for PC and MAC] by [[Mark Uniacke]], [[Computer Chess Forums|rgcc]], December 19, 1995
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/1ebbee2bcc0ae853 Hiarchs Mac: First Impressions] by [[Eric Schiller]], [[Computer Chess Forums|rgcc]], January 27, 1996
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/cc9d40ca3989dfac HIARCS 5 Maximum Search Depth] by Kevin Miller, [[Computer Chess Forums|rgcc]], January 7, 1997
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/49e5507bd20aa3ca AEGON 97/ 1st round: HIARCS lost] by Enrico, [[Computer Chess Forums|rgcc]], April 16, 1997
* [https://groups.google.com/d/msg/rec.games.chess.computer/8T8Vu5RExFs/ly4pvg-ihg4J [REVIEW] HIARCS 6.0 Macintosh (long)] by Richard A. Fowell, [[Computer Chess Forums|rgcc]], December 12, 1997
* [https://www.stmintz.com/ccc/index.php?id=13605 LCT II results of Reb9, F5, and H6 on K6/233] by [[Albert Silver]], [[CCC]], January 03, 1998 » [[LCT II]], [[Rebel]], [[Fritz]]
* [https://www.stmintz.com/ccc/index.php?id=18139 Horrible move!] by [[Tony Hedlund]], [[CCC]], May 07, 1998 » [[Fifty-move Rule]]
==2000 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=12843 HIARCS 11.1 SP / MP Macintosh has arrived!] by rafowell, [[CCC]], Apr 03, 2007 » [[Macintosh]]
* [http://www.hiarcs.net/forums/viewtopic.php?p=2944 Re: Search or Evaluation?] by [[Mark Uniacke]], [[Computer Chess Forums|HIARCS Forum]], October 14, 2007
* [http://www.hiarcs.net/forums/viewtopic.php?t=1677 World Computer Chess Championship 2008 HIARCS wins!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], September 06, 2008 » [[WCCC 2008]]
: [http://hiarcs.net/forums/viewtopic.php?t=1677&postdays=0&postorder=asc&start=180 World Computer Chess Championship 2008 HIARCS wins!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], December 16, 2011
==2010 ...==
* [http://www.hiarcs.net/forums/viewtopic.php?t=4550 World Computer Software Championship 2011 - HIARCS wins!!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], November 26, 2011 » [[WCSC 2011]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=6024 HIARCS World Computer Software Champion 2013!] by [[Harvey Williamson]], [[Computer Chess Forums|HIARCS Forum]], June 04, 2013 » [[WCSC 2013]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=7961 The Future of HIARCS] by [[Fernando Villegas]], [[Computer Chess Forums|HIARCS Forum]], July 05, 2016 » [[WCCC 2016]], [[WCSC 2016]]
=External Links=
* [http://www.hiarcs.com/ HIARCS Chess Software for PC, Mac, Pocket PC, iPhone, iPod and Palm Chess]
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=53 HIARCS' ICGA Tournaments]
* [https://en.wikipedia.org/wiki/HIARCS HIARCS from Wikipedia]
* [http://www.thorstenczub.de/hiarcs.html HIARCS Fan Page] by [[Thorsten Czub]]
* [http://www.thorstenczub.de/hiarcs9.html HIARCS 9] by [[Thorsten Czub]]
* [http://chessbase.com/newsdetail.asp?newsid=7069 HIARCS 13 – the Professional Openings Book] by [[Mark Uniacke]], [[ChessBase|ChessBase New]], March 10, 2011 » [[Opening Book]]
* [http://dentonchessclub.co.uk/wp/?p=358 HIARCS King March – Brilliancy Prize? | Denton Chess Club Blog] by [[Ivan Urwin]], October 14, 2013 » [[TCEC Season 5]]
* [http://www.hiarcs.net/forums/ HIARCS Forum]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:UCI]]
[[Category:DosEngine]]
[[Category:Mac]]
