http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Chess_Query_Language 2026-10-26T12:23:22Z Revision history for this page on the wiki MediaWiki 1.43.1 http://debianws.lexgopc.com/wiki143/index.php?title=Chess_Query_Language&diff=4972391&oldid=prev 2023-12-11T18:48:37Z

<p>Importing Wikidata <a href="https://en.wikipedia.org/wiki/Short_description" class="extiw" title="wikipedia:Short description">short description</a>: &quot;Query language for interrogating chess databases&quot;</p> <p><b>New page</b></p><div>{{Short description|Query language for interrogating chess databases}}<br /> &#039;&#039;&#039;Chess Query Language (CQL)&#039;&#039;&#039; is a structured [[query language]] which is designed to allow chess players and researchers to search for games, positions, problems, and studies in a quick and relatively easy manner.<br /> <br /> The user specifies the items that they are looking for, and the database in which to search. After running, the query creates a file in [[Portable Game Notation]] (PGN) format that contains all the games or positions matching the query criteria.<br /> <br /> The language is designed to be extremely flexible; for example, a user does not have to define &#039;&#039;exactly&#039;&#039; the position or theme that they are looking for, but can modify the query so that it will find similar results within certain parameters.&lt;ref&gt;[http://www.xs4all.nl/~timkr/chess2/cql.htm Chess Query Language example] Tim Krabbé&#039;s Chess Site - Retrieved on 2007-07-04&lt;/ref&gt;<br /> <br /> Items and themes that CQL can search for include, but are not limited to:&lt;ref&gt;[http://products.convekta.com/860/2/searches.htm CQL criteria] {{webarchive |url=https://web.archive.org/web/20070921165607/http://products.convekta.com/860/2/searches.htm |date=September 21, 2007 }} convecta.com Retrieved on 2007-07-04&lt;/ref&gt;<br /> <br /> * Player names<br /> * Date and location of games<br /> * [[Chess opening]] used<br /> * Certain moves or [[Combination (chess)|combinations]] of moves<br /> * Certain pieces located on certain squares<br /> * Patterns of pieces in certain locations<br /> * Which pieces each side has left<br /> * Complex criteria such as [[King (chess)|king]] safety or certain [[pawn structure]]s.<br /> <br /> ==References==<br /> &lt;references /&gt;<br /> <br /> ==External links==<br /> *[http://www.gadycosteff.com/cql/ Gady Costeff&#039;s CQL page]<br /> *[https://web.archive.org/web/20140130143815/http://www.rbnn.com/cql/ CQL manual and download page]<br /> *[https://web.archive.org/web/20070716220419/http://www.chessassistance.com/News/ChessAssistant8_Review.html A review of a chess analysis engine with CQL support]<br /> <br /> [[Category:Computer chess]]<br /> [[Category:Query languages]]</div>

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