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Created page with "'''Home * Engines * Eugen''' '''Eugen''',<br/> a chess program developed by Eugenio Castillo Jiménez to run under MS-DOS. Eugen participated at the..."
'''[[Main Page|Home]] * [[Engines]] * Eugen'''
'''Eugen''',<br/>
a chess program developed by [[Eugenio Castillo Jiménez]] to run under [[MS-DOS]]. Eugen participated at the [[WMCCC 1996]] in [https://en.wikipedia.org/wiki/Jakarta Jakarta], the [[WMCCC 1997]] in [https://en.wikipedia.org/wiki/Paris Paris] and the [[WCCC 1999]] in [https://en.wikipedia.org/wiki/Paderborn Paderborn]. Further, Eugen played various [[Spanish Computer Chess Championship|Spanish Computer Chess Championships]], and won the [[SCCC 1996]] <ref>[http://www.csvn.nl/index.php?option=com_content&view=article&id=209%3Aspanje-ccc-1996&catid=19%3Acomputer-computer&Itemid=48&lang=en Spanje CCC 1996], [[CSVN]] tournament site</ref> <ref>[[Eugenio Castillo Jiménez]] ('''1997'''). ''The Spanish Computer-Chess Championship''. [[ICGA Journal|ICCA Journal]], Vol. 20, No. 1</ref>.
According to Eugenio <ref>[http://www.rebel.nl/authors.htm Meet the Authors] by [[Ed Schroder|Ed Schröder]]</ref>, Eugen was partially inspired by open source programs like [[Turbo Chess]], [[GNU Chess]], and [[Crafty]]. It used 16 bit [[Attack and Defend Maps|attacktables]] which were [[Incremental Updates|incrementally updated]] in every [[Make Move|make]] and [[Unmake Move|unmake move]], the [[Search|search]] uses [[Iterative Deepening|iterative deepening]], and [[Null Move Pruning|recursive nullmove]] ([[Depth Reduction R|R]]=2). [[Álvaro Begué]], who for a short time worked with Eugenio on a computer chess project, mentioned Eugen had a good implementation of the [[Null Move Pruning#NMQS|null-move quiescence]] algorithm <ref>[https://www.stmintz.com/ccc/index.php?id=383312 Re: List is NOT a Crafty clone, ... etc] by [[Álvaro Begué]], [[CCC]], August 21, 2004</ref>, based on the ideas and publications by [[Don Beal]] <ref>[[Don Beal]] ('''1989'''). ''Experiments with the Null Move.'' [[Advances in Computer Chess 5]], a revised version is published ('''1990''') under the title ''A Generalized Quiescence Search Algorithm''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_%28journal%29 Artificial Intelligence], Vol. 43, No. 1, edited version in ('''1999'''). ''The Nature of MINIMAX Search''. Ph.D. thesis, IKAT, Chapter 10, pp. 101-116</ref>.
=Descriptions=
given on the [[ICGA]] tournament page <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=28 Eugen's ICGA Tournaments]</ref>:
==1997==
Eugen 7.2 is a program based on a hard selective search [[Extensions|extensions]] algorithm, he don't makes conventional [[Alpha-Beta|alpha beta]] pruning and he (in Spanish it's he) uses a special [[Null Move|null turn moves]] in [[Quiescence Search|quiescence search]]. The program consist of about 40.000 [[C]] and [[Assembly|assembler]] code lines. Node speed on a [[x86|Pentium]] 133Mhz is approximately 12.000 to 30.000 [[Nodes per Second|nodes per second]]. Chess programming is my hobby-job for about last 8 years. Currently [[SCCC 1996|Spanish CCC]].
==1999==
Eugen born in 1994 like a personal free time project, initially written in [[Pascal]] and assembler, in 1995 it was changed to C language. Eugen is partially inspirated in freeware programs like [[Turbo Chess]], [[GNU Chess|Gnu]], and [[Crafty]].
=Selected Games=
[[WMCCC 1997]], round 1, [[Eugen|Eugen 7.2]] - [[Junior]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=5&round=1&id=7 Paris 1997 - Chess - Round 1 - Game 7 (ICGA Tournaments)]</ref>
<pre>
[Event "WMCCC 1997"]
[Site "Paris, France"]
[Date "1997.10.26"]
[Round "1"]
[White "Eugen 7.2"]
[Black "Junior"]
[Result "1/2-1/2"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7
10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 b4 15.Ncb5 axb5 16.Nxb5 Qc6 17.fxe7 Nb7
18.Nd4 Qc5 19.Bb5+ Kxe7 20.e5 d5 21.Rhf1 Nd8 22.Kb1 Qa7 23.Nc6+ Nxc6 24.Bxc6 Qxa2+ 25.Kc1
Ra7 26.Qf2 Qa5 27.Bxd5 Qa1+ 28.Kd2 Qa5 29.Ke1 Rf8 30.Be4 Rd7 31.Rxd7+ Bxd7 32.Qd4 Rd8
33.Qd6+ Ke8 34.Kf2 Ba4 35.Bc6+ Bxc6 36.Qxc6+ Kf8 37.Qe4 b3 38.cxb3 Qd2+ 39.Kg1 Qxg5+
40.Kh1 Qd2 41.Qxh7 Qd5+ 42.Kg1 Qc5+ 43.Kh1 Qxe5 44.Qh8+ Ke7 45.Rxf7+ Kxf7 46.Qxd8 Qe4+
47.Kg1 Qb1+ 48.Kg2 Qxb2+ 49.Kh1 Qxb3 50.Qd7+ Kg6 51.Qe8+ Kg5 52.Qd8+ Kg4 53.Qd4+ Kf3
54.Qxg7 Qd1+ 55.Qg1 Qd5 56.h4 Qf5 57.Qg2+ 1/2-1/2
</pre>
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=11369 Goliath vs. Eugen] by [[Howard Exner]], [[CCC]], October 30, 1997
* [https://www.stmintz.com/ccc/index.php?id=26806 Eugen 7.5] by [[Gabriele Müller]], [[CCC]], September 16, 1998
* [http://www.open-aurec.com/wbforum/viewtopic.php?t=30370#p115506 Re: Many News, see the WinBoard News Ticker !] by Pete Galati, [[Computer Chess Forums|Winboard Forum]], September 27, 1999
=External Links=
==Chess Engin==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=28 Eugen's ICGA Tournaments]
==Misc==
* [https://en.wikipedia.org/wiki/Eugene_(given_name) Eugene (given name) from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Given Name]]
[[Category:DosEngine]]
'''Eugen''',<br/>
a chess program developed by [[Eugenio Castillo Jiménez]] to run under [[MS-DOS]]. Eugen participated at the [[WMCCC 1996]] in [https://en.wikipedia.org/wiki/Jakarta Jakarta], the [[WMCCC 1997]] in [https://en.wikipedia.org/wiki/Paris Paris] and the [[WCCC 1999]] in [https://en.wikipedia.org/wiki/Paderborn Paderborn]. Further, Eugen played various [[Spanish Computer Chess Championship|Spanish Computer Chess Championships]], and won the [[SCCC 1996]] <ref>[http://www.csvn.nl/index.php?option=com_content&view=article&id=209%3Aspanje-ccc-1996&catid=19%3Acomputer-computer&Itemid=48&lang=en Spanje CCC 1996], [[CSVN]] tournament site</ref> <ref>[[Eugenio Castillo Jiménez]] ('''1997'''). ''The Spanish Computer-Chess Championship''. [[ICGA Journal|ICCA Journal]], Vol. 20, No. 1</ref>.
According to Eugenio <ref>[http://www.rebel.nl/authors.htm Meet the Authors] by [[Ed Schroder|Ed Schröder]]</ref>, Eugen was partially inspired by open source programs like [[Turbo Chess]], [[GNU Chess]], and [[Crafty]]. It used 16 bit [[Attack and Defend Maps|attacktables]] which were [[Incremental Updates|incrementally updated]] in every [[Make Move|make]] and [[Unmake Move|unmake move]], the [[Search|search]] uses [[Iterative Deepening|iterative deepening]], and [[Null Move Pruning|recursive nullmove]] ([[Depth Reduction R|R]]=2). [[Álvaro Begué]], who for a short time worked with Eugenio on a computer chess project, mentioned Eugen had a good implementation of the [[Null Move Pruning#NMQS|null-move quiescence]] algorithm <ref>[https://www.stmintz.com/ccc/index.php?id=383312 Re: List is NOT a Crafty clone, ... etc] by [[Álvaro Begué]], [[CCC]], August 21, 2004</ref>, based on the ideas and publications by [[Don Beal]] <ref>[[Don Beal]] ('''1989'''). ''Experiments with the Null Move.'' [[Advances in Computer Chess 5]], a revised version is published ('''1990''') under the title ''A Generalized Quiescence Search Algorithm''. [https://en.wikipedia.org/wiki/Artificial_Intelligence_%28journal%29 Artificial Intelligence], Vol. 43, No. 1, edited version in ('''1999'''). ''The Nature of MINIMAX Search''. Ph.D. thesis, IKAT, Chapter 10, pp. 101-116</ref>.
=Descriptions=
given on the [[ICGA]] tournament page <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=28 Eugen's ICGA Tournaments]</ref>:
==1997==
Eugen 7.2 is a program based on a hard selective search [[Extensions|extensions]] algorithm, he don't makes conventional [[Alpha-Beta|alpha beta]] pruning and he (in Spanish it's he) uses a special [[Null Move|null turn moves]] in [[Quiescence Search|quiescence search]]. The program consist of about 40.000 [[C]] and [[Assembly|assembler]] code lines. Node speed on a [[x86|Pentium]] 133Mhz is approximately 12.000 to 30.000 [[Nodes per Second|nodes per second]]. Chess programming is my hobby-job for about last 8 years. Currently [[SCCC 1996|Spanish CCC]].
==1999==
Eugen born in 1994 like a personal free time project, initially written in [[Pascal]] and assembler, in 1995 it was changed to C language. Eugen is partially inspirated in freeware programs like [[Turbo Chess]], [[GNU Chess|Gnu]], and [[Crafty]].
=Selected Games=
[[WMCCC 1997]], round 1, [[Eugen|Eugen 7.2]] - [[Junior]] <ref>[https://www.game-ai-forum.org/icga-tournaments/round.php?tournament=5&round=1&id=7 Paris 1997 - Chess - Round 1 - Game 7 (ICGA Tournaments)]</ref>
<pre>
[Event "WMCCC 1997"]
[Site "Paris, France"]
[Date "1997.10.26"]
[Round "1"]
[White "Eugen 7.2"]
[Black "Junior"]
[Result "1/2-1/2"]
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7
10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 b4 15.Ncb5 axb5 16.Nxb5 Qc6 17.fxe7 Nb7
18.Nd4 Qc5 19.Bb5+ Kxe7 20.e5 d5 21.Rhf1 Nd8 22.Kb1 Qa7 23.Nc6+ Nxc6 24.Bxc6 Qxa2+ 25.Kc1
Ra7 26.Qf2 Qa5 27.Bxd5 Qa1+ 28.Kd2 Qa5 29.Ke1 Rf8 30.Be4 Rd7 31.Rxd7+ Bxd7 32.Qd4 Rd8
33.Qd6+ Ke8 34.Kf2 Ba4 35.Bc6+ Bxc6 36.Qxc6+ Kf8 37.Qe4 b3 38.cxb3 Qd2+ 39.Kg1 Qxg5+
40.Kh1 Qd2 41.Qxh7 Qd5+ 42.Kg1 Qc5+ 43.Kh1 Qxe5 44.Qh8+ Ke7 45.Rxf7+ Kxf7 46.Qxd8 Qe4+
47.Kg1 Qb1+ 48.Kg2 Qxb2+ 49.Kh1 Qxb3 50.Qd7+ Kg6 51.Qe8+ Kg5 52.Qd8+ Kg4 53.Qd4+ Kf3
54.Qxg7 Qd1+ 55.Qg1 Qd5 56.h4 Qf5 57.Qg2+ 1/2-1/2
</pre>
=Forum Posts=
* [https://www.stmintz.com/ccc/index.php?id=11369 Goliath vs. Eugen] by [[Howard Exner]], [[CCC]], October 30, 1997
* [https://www.stmintz.com/ccc/index.php?id=26806 Eugen 7.5] by [[Gabriele Müller]], [[CCC]], September 16, 1998
* [http://www.open-aurec.com/wbforum/viewtopic.php?t=30370#p115506 Re: Many News, see the WinBoard News Ticker !] by Pete Galati, [[Computer Chess Forums|Winboard Forum]], September 27, 1999
=External Links=
==Chess Engin==
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=28 Eugen's ICGA Tournaments]
==Misc==
* [https://en.wikipedia.org/wiki/Eugene_(given_name) Eugene (given name) from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Given Name]]
[[Category:DosEngine]]
