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Created page with "'''Home * Engines * Phalanx''' FILE:Greek Phalanx.jpg|border|right|thumb| Greek Phalanx <ref>An [http://edsitement.neh.gov/edsitements-persian-wars-resour..."
'''[[Main Page|Home]] * [[Engines]] * Phalanx'''
[[FILE:Greek Phalanx.jpg|border|right|thumb| Greek Phalanx <ref>An [http://edsitement.neh.gov/edsitements-persian-wars-resource-pages#node-20463 EDSITEment-reconstructed] Greek phalanx based on sources from [https://en.wikipedia.org/wiki/Perseus_Project The Perseus Project], [https://en.wikipedia.org/wiki/Phalanx_formation Phalanx formation from Wikipedia]</ref> ]]
'''Phalanx''',<br/>
an [[:Category:Open Source|open source chess engine]], originally released by a Czech student [[Dušan Dobeš]] under [[Free Software Foundation#GPL|GPL]], also available as [[ChessBase#YoungTalents|Young Talent]] by [[ChessBase]] running under the [[Fritz#FritzGUI|Fritz6 GUI]]. In about 2000 the project has been abandoned <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a56fb4fa7b0d427b Phalanx is dead?] by [[Tord Romstad]], [[Computer Chess Forums|rgcc]], March 27, 2002</ref> , but it was resurrected in 2006 by [[José de Paula Rodrigues]] <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/3819371b750533f1# Phalanx XXII - Reborn] by [[José de Paula Rodrigues]], [[Computer Chess Forums|rgcc]], January 19, 2006</ref> <ref>[http://sourceforge.net/users/espinafre/ José de Paula] from [http://sourceforge.net/ SourceForge.net]</ref>. In October 2014, after fourteen years and nine months, Phalanx XXIII was released by Dušan Dobeš <ref>[http://www.talkchess.com/forum/viewtopic.php?t=54098 Phalanx XXIII] by [[Dušan Dobeš]], [[CCC]], October 20, 2014</ref>.
=Description=
Phalanx's board is [[Board Representation|represented]] by a [[10x12 Board|10x12 mailbox]] with [[Piece-Lists|piece-lists]]. The [[Search|search]] uses [[Principal Variation Search|PVS]] with [[Transposition Table|transposition table]] inside an [[Iterative Deepening|iterative deepening]] centiply framework for [[Extensions#FractionalExtensions|fractional extensions]] and [[Reductions|reductions]] without [[Aspiration Windows|aspiration windows]], performing state of the art [[Null Move Pruning|null move pruning]], [[Late Move Reductions|late move reductions]] and [[Futility Pruning|futility pruning]] near the tips. Phalanx pioneered in [[Tapered Eval|tapered eval]] and speculatively computes both [[Endgame|endgame]] and [[Middlegame|middlegame]] [[Score|scores]] to balance them by total [[Material|material]]. This prevents [[Evaluation Discontinuity|evaluation discontinuity]] when searching a position on the edge of middlegame and endgame. The [[Evaluation|static evaluation]] first extracts knowledge and prepares a [[Color Flipping|color flipped]] board, and applies that knowledge in a second pass using the flipped board to do stuff for both sides with the same color independent code.
=Quotes=
by [[Dušan Dobeš]] from [[Computer Chess Forums|rgcc]], July 16, 1998 <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7ab1751bddacb97a# Phalanx ?] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 16, 1998</ref> :
Phalanx is my hobby project. It started in March 1997. It's developed under [[Linux]] and [[Free Software Foundation#GCC|GCC]], I also prepared binary distribution for [[Windows|Win32]] with latter versions. Licensing policy is GPL (free and in sources). Interface is xboard/winboard/RoboFICS compatible. It plays on FICS as 'pikozrout', it's current blitz rating is 2380, standard 2210.
=Forum Posts=
==1997 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/dba5dc4e35dae67 Phalanx III - chess playing program for Linux] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 08, 1997
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7ab1751bddacb97a# Phalanx ?] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 16, 1998
==2000 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a56fb4fa7b0d427b Phalanx is dead?] by [[Tord Romstad]], [[Computer Chess Forums|rgcc]], March 27, 2002
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/3819371b750533f1# Phalanx XXII - Reborn] by [[José de Paula Rodrigues]], [[Computer Chess Forums|rgcc]], January 19, 2006
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=42398 Phalanx source code] by [[Carlos Pesce]], [[CCC]], February 09, 2012
* [http://www.talkchess.com/forum/viewtopic.php?t=52127 New Phalanx code] by [[Steven Atkinson]], [[CCC]], April 26, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=54098 Phalanx XXIII] by [[Dušan Dobeš]], [[CCC]], October 20, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=54744 Phalanx XXIV] by [[Dušan Dobeš]], [[CCC]], December 24, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=60019 Phalanx XXV] by [[Dušan Dobeš]], [[CCC]], May 01, 2016
=External Links=
==Chess Engine==
* [https://sourceforge.net/projects/phalanx/ Phalanx Chess | Free software downloads at SourceForge.net]
* [https://sourceforge.net/projects/phalanx/files/ Phalanx Chess at SourceForge.net]
* [http://phalanx.sourceforge.net/ | SourceForge.net]
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Phalanx&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Phalanx] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wiktionary.org/wiki/phalanx phalanx - Wiktionary]
* [https://en.wikipedia.org/wiki/Phalanx Phalanx disambiguation page from Wikipedia]
* [https://en.wikipedia.org/wiki/Phalanx_formation Phalanx formation from Wikipedia]
* [https://en.wikipedia.org/wiki/Close_order_formation Close order formation from Wikipedia]
* [https://en.wikipedia.org/wiki/Phalanx_(band) Phalanx] - Where All The Girls, [https://en.wikipedia.org/wiki/East_Berlin East Berlin] 1985, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: lineup [https://en.wikipedia.org/wiki/James_Blood_Ulmer James Blood Ulmer], [https://en.wikipedia.org/wiki/George_Adams_(musician) George Adams], [https://de.wikipedia.org/wiki/Amin_Ali Amin Ali], [https://de.wikipedia.org/wiki/Calvin_Weston Calvin Weston]
: {{#evu:https://www.youtube.com/watch?v=EAnG5hYPkTg|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[:Category:Open Source]]
[[:Category:GPL]]
[[:Category:Military]]
[[FILE:Greek Phalanx.jpg|border|right|thumb| Greek Phalanx <ref>An [http://edsitement.neh.gov/edsitements-persian-wars-resource-pages#node-20463 EDSITEment-reconstructed] Greek phalanx based on sources from [https://en.wikipedia.org/wiki/Perseus_Project The Perseus Project], [https://en.wikipedia.org/wiki/Phalanx_formation Phalanx formation from Wikipedia]</ref> ]]
'''Phalanx''',<br/>
an [[:Category:Open Source|open source chess engine]], originally released by a Czech student [[Dušan Dobeš]] under [[Free Software Foundation#GPL|GPL]], also available as [[ChessBase#YoungTalents|Young Talent]] by [[ChessBase]] running under the [[Fritz#FritzGUI|Fritz6 GUI]]. In about 2000 the project has been abandoned <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a56fb4fa7b0d427b Phalanx is dead?] by [[Tord Romstad]], [[Computer Chess Forums|rgcc]], March 27, 2002</ref> , but it was resurrected in 2006 by [[José de Paula Rodrigues]] <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/3819371b750533f1# Phalanx XXII - Reborn] by [[José de Paula Rodrigues]], [[Computer Chess Forums|rgcc]], January 19, 2006</ref> <ref>[http://sourceforge.net/users/espinafre/ José de Paula] from [http://sourceforge.net/ SourceForge.net]</ref>. In October 2014, after fourteen years and nine months, Phalanx XXIII was released by Dušan Dobeš <ref>[http://www.talkchess.com/forum/viewtopic.php?t=54098 Phalanx XXIII] by [[Dušan Dobeš]], [[CCC]], October 20, 2014</ref>.
=Description=
Phalanx's board is [[Board Representation|represented]] by a [[10x12 Board|10x12 mailbox]] with [[Piece-Lists|piece-lists]]. The [[Search|search]] uses [[Principal Variation Search|PVS]] with [[Transposition Table|transposition table]] inside an [[Iterative Deepening|iterative deepening]] centiply framework for [[Extensions#FractionalExtensions|fractional extensions]] and [[Reductions|reductions]] without [[Aspiration Windows|aspiration windows]], performing state of the art [[Null Move Pruning|null move pruning]], [[Late Move Reductions|late move reductions]] and [[Futility Pruning|futility pruning]] near the tips. Phalanx pioneered in [[Tapered Eval|tapered eval]] and speculatively computes both [[Endgame|endgame]] and [[Middlegame|middlegame]] [[Score|scores]] to balance them by total [[Material|material]]. This prevents [[Evaluation Discontinuity|evaluation discontinuity]] when searching a position on the edge of middlegame and endgame. The [[Evaluation|static evaluation]] first extracts knowledge and prepares a [[Color Flipping|color flipped]] board, and applies that knowledge in a second pass using the flipped board to do stuff for both sides with the same color independent code.
=Quotes=
by [[Dušan Dobeš]] from [[Computer Chess Forums|rgcc]], July 16, 1998 <ref>[http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7ab1751bddacb97a# Phalanx ?] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 16, 1998</ref> :
Phalanx is my hobby project. It started in March 1997. It's developed under [[Linux]] and [[Free Software Foundation#GCC|GCC]], I also prepared binary distribution for [[Windows|Win32]] with latter versions. Licensing policy is GPL (free and in sources). Interface is xboard/winboard/RoboFICS compatible. It plays on FICS as 'pikozrout', it's current blitz rating is 2380, standard 2210.
=Forum Posts=
==1997 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/dba5dc4e35dae67 Phalanx III - chess playing program for Linux] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 08, 1997
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/7ab1751bddacb97a# Phalanx ?] by [[Dušan Dobeš]], [[Computer Chess Forums|rgcc]], July 16, 1998
==2000 ...==
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/a56fb4fa7b0d427b Phalanx is dead?] by [[Tord Romstad]], [[Computer Chess Forums|rgcc]], March 27, 2002
* [http://groups.google.com/group/rec.games.chess.computer/browse_frm/thread/3819371b750533f1# Phalanx XXII - Reborn] by [[José de Paula Rodrigues]], [[Computer Chess Forums|rgcc]], January 19, 2006
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=42398 Phalanx source code] by [[Carlos Pesce]], [[CCC]], February 09, 2012
* [http://www.talkchess.com/forum/viewtopic.php?t=52127 New Phalanx code] by [[Steven Atkinson]], [[CCC]], April 26, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=54098 Phalanx XXIII] by [[Dušan Dobeš]], [[CCC]], October 20, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=54744 Phalanx XXIV] by [[Dušan Dobeš]], [[CCC]], December 24, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=60019 Phalanx XXV] by [[Dušan Dobeš]], [[CCC]], May 01, 2016
=External Links=
==Chess Engine==
* [https://sourceforge.net/projects/phalanx/ Phalanx Chess | Free software downloads at SourceForge.net]
* [https://sourceforge.net/projects/phalanx/files/ Phalanx Chess at SourceForge.net]
* [http://phalanx.sourceforge.net/ | SourceForge.net]
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Phalanx&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Phalanx] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wiktionary.org/wiki/phalanx phalanx - Wiktionary]
* [https://en.wikipedia.org/wiki/Phalanx Phalanx disambiguation page from Wikipedia]
* [https://en.wikipedia.org/wiki/Phalanx_formation Phalanx formation from Wikipedia]
* [https://en.wikipedia.org/wiki/Close_order_formation Close order formation from Wikipedia]
* [https://en.wikipedia.org/wiki/Phalanx_(band) Phalanx] - Where All The Girls, [https://en.wikipedia.org/wiki/East_Berlin East Berlin] 1985, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: lineup [https://en.wikipedia.org/wiki/James_Blood_Ulmer James Blood Ulmer], [https://en.wikipedia.org/wiki/George_Adams_(musician) George Adams], [https://de.wikipedia.org/wiki/Amin_Ali Amin Ali], [https://de.wikipedia.org/wiki/Calvin_Weston Calvin Weston]
: {{#evu:https://www.youtube.com/watch?v=EAnG5hYPkTg|alignment=left|valignment=top}}
=References=
<references />
'''[[Engines|Up one Level]]'''
[[:Category:Open Source]]
[[:Category:GPL]]
[[:Category:Military]]
