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'''[[Main Page|Home]] * [[Search]] * Quiescence'''
[[FILE:Quiescence.jpg|border|right|thumb|link=http://www.yogachicago.com/jan06/art.shtml|[[Arts#:Category:Karen Schuman|Karen Schuman]], - Quiescence <ref>Quiescence by [[Arts#:Category:Karen Schuman|Karen Schuman]] from [http://www.yogachicago.com/jan06/art.shtml Artist Karen Schuman’s Personal Mythology] Reviewed by [http://www.chicagoartcriticsassociation.org/B/poplawska.html Anna Poplawska]</ref> ]]
Most chess programs, at the end of the main search perform a more limited '''quiescence''' search, containing fewer moves. The purpose of this search is to only [[Evaluation|evaluate]] "quiet" [[Chess Position|positions]], or positions where there are no winning [[Tactical Moves|tactical moves]] to be made. This search is needed to avoid the [[Horizon Effect|horizon effect]]. Simply stopping your search when you reach the desired [[Depth|depth]] and then evaluate, is very dangerous. Consider the situation where the last move you consider is QxP. If you stop there and evaluate, you might think that you have won a pawn. But what if you were to search one move deeper and find that the next move is PxQ? You didn't win a pawn, you actually lost a queen. Hence the need to make sure that you are evaluating only quiescent (quiet) positions.
* [http://web.archive.org/web/20070813042640/www.seanet.com/~brucemo/topics/quiescent.htm Quiescence Search] from [[Bruce Moreland|Bruce Moreland's]] [http://web.archive.org/web/20070811182741/www.seanet.com/%7Ebrucemo/topics/topics.htm Programming Topics]
* [http://www.top-5000.nl/authors/rebel/chess840.htm#QS Quiescent Search in REBEL ] from [[Ed Schroder|Ed Schröder's]] [http://www.top-5000.nl/authors/rebel/chess840.htm Programmer Stuff]
* [https://en.wikipedia.org/wiki/Pim_Jacobs Pim Jacobs], [http://nl.wikipedia.org/wiki/Ruud_Jacobs Ruud Jacobs], [http://nl.wikipedia.org/wiki/Ruud_Brink Ruud Brink], [https://en.wikipedia.org/wiki/Wim_Overgaauw Wim Overgaauw], [[Videos#DomUmRomao:Category:Dom Um Romão|Dom Um Romão]], [https://en.wikipedia.org/wiki/Astrud_Gilberto Astrud Gilberto] - [https://en.wikipedia.org/wiki/Meditation_%28song%29 Meditation], [https://en.wikipedia.org/wiki/It_Might_as_Well_Be_Spring It Might as Well Be Spring], Telephone Song, [https://en.wikipedia.org/wiki/Only_Trust_Your_Heart Only Trust Your Heart], [https://en.wikipedia.org/wiki/Corcovado_%28song%29 Corcovado (Quiet Nights of Quiet Stars)], [https://en.wikipedia.org/wiki/The_Girl_from_Ipanema The Girl From Ipanema]; from [http://www.cultura.nl/genres/kunst/2014/brazili-.html Dzjes Zien à la Bossa Nova], [https://en.wikipedia.org/wiki/Nederlandse_Christelijke_Radio_Vereniging NCRV] 1965, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=9DCaxN6TfH4|alignment=left|valignment=top}}
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