Difference between revisions of "Gullydeckel"

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[[FILE:Rome-SPQR.JPG|border|right|thumb|  [https://en.wikipedia.org/wiki/Manhole_cover Manhole cover] in [https://en.wikipedia.org/wiki/Rome Rome] <ref>[https://en.wikipedia.org/wiki/Manhole_cover Manhole cover] in [https://en.wikipedia.org/wiki/Rome Rome] with [https://en.wikipedia.org/wiki/SPQR SPQR] inscription, Image by [https://en.wikipedia.org/wiki/User:Indian_Joe Indian Joe], January 08, 2007, [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons], [https://en.wikipedia.org/wiki/SPQR SPQR from Wikipedia]</ref> ]]
 
[[FILE:Rome-SPQR.JPG|border|right|thumb|  [https://en.wikipedia.org/wiki/Manhole_cover Manhole cover] in [https://en.wikipedia.org/wiki/Rome Rome] <ref>[https://en.wikipedia.org/wiki/Manhole_cover Manhole cover] in [https://en.wikipedia.org/wiki/Rome Rome] with [https://en.wikipedia.org/wiki/SPQR SPQR] inscription, Image by [https://en.wikipedia.org/wiki/User:Indian_Joe Indian Joe], January 08, 2007, [https://en.wikipedia.org/wiki/Wikimedia_Commons Wikimedia Commons], [https://en.wikipedia.org/wiki/SPQR SPQR from Wikipedia]</ref> ]]
  
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'''Gullydeckel''',<br/>
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'''Gullydeckel''', (Gullydeckel2, Gully)<br/>
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a [[Chess Engine Communication Protocol]] compliant [[:Category:Open Source|open source engine]] under the [[Free Software Foundation#GPL|GNU General Public License]] written in [[C]] by [[Martin Borriss]].
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a [[Chess Engine Communication Protocol]] (CEPT) compliant [[:Category:Open Source|open source engine]] under the [[Free Software Foundation#GPL|GNU General Public License]] by [[Martin Borriss]], written in [[C]]. A first version, Gullydeckel '''1''', has been developed in 1994/1995. Gullydeckel '''2''' was written mainly in 1996, while [[Windows|Windows 32]] support, analysis, [[Pondering|pondering]], [[WinBoard]] protocol version 2 aka CEPT and [[ChessBase (Database)#GUI|ChessBase GUI]] compatibility was finally realized in 2002/2003 <ref>[http://borriss.com/g2/RELEASE Gullydeckel2 chess playing program]</ref>. Beside Windows, supported platform is [[Linux]].  
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Supported platforms are [[Linux]] and [[Windows]].  
 
  
 
=Features=
 
=Features=
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</pre>
 
</pre>
 
=Forum Posts=  
 
=Forum Posts=  
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* [https://groups.google.com/d/msg/rec.games.chess.computer/b7AtuVY4reE/7bWjK9x3v6kJ Re: Deep Quiesence Searching] by [[Martin Borriss]], [[Computer Chess Forums|rgcc]], February 26, 1997
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* [https://groups.google.com/d/msg/rec.games.chess.computer/b7AtuVY4reE/7bWjK9x3v6kJ Re: Deep Quiesence Searching] by [[Martin Borriss]], [[Computer Chess Forums|rgcc]], February 24, 1997
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* [https://groups.google.com/d/msg/rec.games.chess.computer/b7AtuVY4reE/fxkqPXwkaQIJ Re: Deep Quiesence Searching] by [[Martin Borriss]], [[Computer Chess Forums|rgcc]], February 26, 1997
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* [https://groups.google.com/d/msg/rec.games.chess.computer/b7AtuVY4reE/fxkqPXwkaQIJ Re: Deep Quiesence Searching] by [[Martin Borriss]], [[Computer Chess Forums|rgcc]], February 25, 1997
 
* [https://www.stmintz.com/ccc/index.php?id=145760 Gullydeckel - move generator] by [[Thomas Mayer]], [[CCC]], December 20, 2000
 
* [https://www.stmintz.com/ccc/index.php?id=145760 Gullydeckel - move generator] by [[Thomas Mayer]], [[CCC]], December 20, 2000
  

Revision as of 11:48, 11 January 2019

Home * Engines * Gullydeckel

Manhole cover in Rome [1]

Gullydeckel, (Gullydeckel2, Gully)
a Chess Engine Communication Protocol (CEPT) compliant open source engine under the GNU General Public License by Martin Borriss, written in C. A first version, Gullydeckel 1, has been developed in 1994/1995. Gullydeckel 2 was written mainly in 1996, while Windows 32 support, analysis, pondering, WinBoard protocol version 2 aka CEPT and ChessBase GUI compatibility was finally realized in 2002/2003 [2]. Beside Windows, supported platform is Linux.

Features

Board Representation

Search

Evaluation

0x88 Difference

The pre-initialized static int vector[256] in "attacks.c" [3] with ray directions encoded, which is indexed by 0x88 square difference plus offset, somehow reminds on a Gullydeckel, the colloquial German name for Manhole cover [4]: 

/*
if we find that two squares are related according to matrix SqRel,
we use another matrix to look up the direction of the move required
('to walk the vector') if it is a sliding piece (R,B,Q)
*/

static int vector[256] = {
   0  ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,UR,0 ,0 ,0 ,0 ,0 ,0 ,
   UP ,0 ,0 ,0 ,0 ,0 ,0 ,UL,0 ,0 ,UR,0 ,0 ,0 ,0 ,0 ,
   UP ,0 ,0 ,0 ,0 ,0 ,UL,0 ,0 ,0 ,0 ,UR,0 ,0 ,0 ,0 ,
   UP ,0 ,0 ,0 ,0 ,UL,0 ,0 ,0 ,0 ,0 ,0 ,UR,0 ,0 ,0 ,
   UP ,0 ,0 ,0 ,UL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,UR,0 ,0 ,
   UP ,0 ,0 ,UL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,UR,0 ,
   UP ,0 ,UL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,UR,
   UP ,UL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,RI,RI,RI,RI,RI,RI,RI,
   0  ,LE,LE,LE,LE,LE,LE,LE,0 ,0 ,0 ,0 ,0 ,0 ,0 ,DR,
   DN ,DL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,DR,0 ,
   DN ,0 ,DL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,DR,0 ,0 ,
   DN ,0 ,0 ,DL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0 ,DR,0 ,0 ,0 ,
   DN ,0 ,0 ,0 ,DL,0 ,0 ,0 ,0 ,0 ,0 ,DR,0 ,0 ,0 ,0 ,
   DN ,0 ,0 ,0 ,0 ,DL,0 ,0 ,0 ,0 ,DR,0 ,0 ,0 ,0 ,0 ,
   DN ,0 ,0 ,0 ,0 ,0 ,DL,0 ,0 ,DR,0 ,0 ,0 ,0 ,0 ,0 ,
   DN ,0 ,0 ,0 ,0 ,0 ,0 ,DL,0 ,0 ,0 ,0 ,0 ,0 ,0 ,0
 };

Forum Posts

External Links

Chess Engine

Misc

References

  1. ↑ Manhole cover in Rome with SPQR inscription, Image by Indian Joe, January 08, 2007, Wikimedia Commons, SPQR from Wikipedia
  2. ↑ Gullydeckel2 chess playing program
  3. ↑ Gullydeckel Chess Program - Download
  4. ↑ edited, symbols replaced for column alignment

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