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Xpdnt - Revision history
2024-03-29T00:29:39Z
Revision history for this page on the wiki
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GerdIsenberg: Created page with "'''Home * Engines * Xpdnt''' '''Xpdnt''',<br/> an open source chess engine by David B. Weller, written in C and compliant..."
2019-09-27T08:37:48Z
<p>Created page with "'''<a href="/Main_Page" title="Main Page">Home</a> * <a href="/Engines" title="Engines">Engines</a> * Xpdnt''' '''Xpdnt''',<br/> an <a href="/Category:Open_Source" title="Category:Open Source">open source chess engine</a> by <a href="/David_B._Weller" title="David B. Weller">David B. Weller</a>, written in <a href="/C" title="C">C</a> and compliant..."</p>
<p><b>New page</b></p><div>'''[[Main Page|Home]] * [[Engines]] * Xpdnt'''<br />
<br />
'''Xpdnt''',<br/><br />
an [[:Category:Open Source|open source chess engine]] by [[David B. Weller]], written in [[C]] and compliant to the [[Chess Engine Communication Protocol]]. <br />
Already announced in 2005, Xpdnt was first released in April 2006 <ref>[http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4664&p=24174 Beta Testers needed] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], April 16, 2006</ref>, <br />
the last recent update appeared in October 2009 <ref>[http://www.talkchess.com/forum/viewtopic.php?t=30539 The Gaviota Saga] by [[Graham Banks]], [[CCC]], November 09, 2009</ref>. <br />
<br />
=Features=<br />
<ref>based on the sources</ref><br />
==[[Board Representation]]==<br />
* [[Vector Attacks|16x16 Vector Attacks]]<br />
* [[Piece-Lists]]<br />
==[[Search]]==<br />
* [[Iterative Deepening]]<br />
* [[Aspiration Windows]]<br />
* [[Principal Variation Search]]<br />
* [[Transposition Table]]<br />
* [[Selectivity]]<br />
** [[Quiescence Search]]<br />
** [[Delta Pruning]]<br />
** [[Futility Pruning]]<br />
** [[Mate Distance Pruning]]<br />
** [[Null Move Pruning]]<br />
** [[Razoring]]<br />
** [[Check Extensions]]<br />
** [[One Reply Extensions]]<br />
** [[Mate Threat Extensions]]<br />
** [[Passed Pawn Extensions|Pawn to 7th Rank Extensions]]<br />
* [[Move Ordering]]<br />
** [[Killer Heuristic]]<br />
** [[History Heuristic]]<br />
** [[Internal Iterative Deepening]]<br />
** [[Static Exchange Evaluation]]<br />
==[[Evaluation]]==<br />
* [[Material]]<br />
* [[Trapped Pieces]]<br />
* [[Outposts]]<br />
* [[Mobility]]<br />
* [[Piece-Square Tables]]<br />
* [[Pawn Structure]]<br />
** [[Passed Pawn|Passed Pawns]]<br />
** [[Weak Pawns]]<br />
* [[King Safety]]<br />
** [[King Safety#PawnShield|Pawn Shield]]<br />
** [[King Safety#PawnStorm|Pawn Storm]]<br />
** [[King Safety#KingTropism|Tropism]]<br />
** [[King Safety#SquareControl|Square Control]]<br />
** [[Rook]] or [[Queen]] on [[Open File|open files]] near the [[King]]<br />
** [[King Safety#Scaling|Scaling by Material]]<br />
* [[King Centralization]] in the [[Endgame]]<br />
<br />
=See also=<br />
* [[GES]]<br />
<br />
=Forum Posts=<br />
==2005 ...==<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=3370&p=16850 NPS] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], August 27, 2005<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=4&t=4664&p=24174 Beta Testers needed] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], April 16, 2006<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=4927&p=25313 New version of Xpdnt] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], June 02, 2006<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=5899&p=28499 XPDNT 061120 released] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], November 20, 2006<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=17186 xpdnt_071017 released] by [[David B. Weller]], [[CCC]], October 17, 2007<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=17880 Xpdnt 071115 win32 Intel compiler 10 p.g.o available] by [[Jim Ablett]], [[CCC]], November 15, 2007<br />
==2008 ...==<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=19517 Xpdnt 080209] by [[David B. Weller]], [[CCC]], February 10, 2008<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=7128&p=32732 Xpdnt 080209 by David B. Weller - Win32 JA build] by [[Jim Ablett]], [[Computer Chess Forums|Winboard Forum]], February 10, 2008<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=22395 Xpdnt_080716] by [[David B. Weller]], [[CCC]], July 16, 2008<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=23617 Xpdnt 080904] by [[David B. Weller]], [[CCC]], September 10, 2008<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=24275 Xpdnt 080927] by [[David B. Weller]], [[CCC]], October 09, 2008<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=28889 xpdnt 090704 released] by [[David B. Weller]], [[CCC]], July 10, 2009<br />
* [http://www.open-aurec.com/wbforum/viewtopic.php?f=2&t=50482&p=191657 Xpdnt_091007 Released] by [[David B. Weller]], [[Computer Chess Forums|Winboard Forum]], October 14, 2009<br />
==2010 ...==<br />
* [http://www.talkchess.com/forum/viewtopic.php?t=35857 Xpdnt 091007 - CCRL 40/4 Result] by [[Adam Hair]], [[CCC]], August 22, 2010<br />
<br />
=External Links=<br />
* [http://www.opraus.com/ai/ Xpdnt: Free chess engine]<br />
* [http://kirr.homeunix.org/chess/engines/Jim%20Ablett/XPDNT/ Index of /chess/engines/Jim Ablett/XPDNT] compiled by [[Jim Ablett]], hosted by [[Kirill Kryukov]]<br />
* [http://ccrl.chessdom.com/ccrl/404/cgi/engine_details.cgi?print=Details&each_game=1&eng=Xpdnt%20091007#Xpdnt_091007 Xpdnt 091007] in [[CCRL|CCRL 40/4]]<br />
<br />
=References= <br />
<references /><br />
'''[[Engines|Up one Level]]'''<br />
[[Category:Open Source]]<br />
[[Category:WinBoard]]<br />
[[Category:XBoard]]</div>
GerdIsenberg