Difference between revisions of "Search Explosion"

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(Created page with "'''Home * Search * Search Explosion''' FILE:The Scream.jpg|border|right|thumb| link=http://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa|[[Arts#Munch|Ed...")
 
 
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[[FILE:The Scream.jpg|border|right|thumb|
 
[[FILE:The Scream.jpg|border|right|thumb|
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link=http://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa|[[Arts#Munch|Edvard Munch]] - [https://en.wikipedia.org/wiki/The_Scream The Scream]<ref>[[Arts#Munch|Edvard Munch]] - One of several versions of the painting [https://en.wikipedia.org/wiki/The_Scream The Scream] (or The Cry),  [https://en.wikipedia.org/wiki/National_Gallery_%28Norway%29 National Gallery], 1893, [https://en.wikipedia.org/wiki/Oslo Oslo], [https://en.wikipedia.org/wiki/Norway Norway], [http://www.ibiblio.org/wm/paint/auth/munch/ WebMuseum: Munch, Edvard] - Among theories advanced to account for the reddish sky in the background is the artist's memory of the effects of the powerful volcanic [https://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa eruption of Krakatoa], which deeply tinted sunset skies red in parts of the Western hemisphere for months during 1883 and 1884, about a decade before Munch painted The Scream. This explanation has been disputed by scholars, who note that Munch was an expressive painter and was not primarily interested in literal renderings of what he had seen. </ref> ]]
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link=http://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa|[[:Category:Edvard Munch|Edvard Munch]] - [https://en.wikipedia.org/wiki/The_Scream The Scream]<ref>[[:Category:Edvard Munch|Edvard Munch]] - One of several versions of the painting [https://en.wikipedia.org/wiki/The_Scream The Scream] (or The Cry),  [https://en.wikipedia.org/wiki/National_Gallery_%28Norway%29 National Gallery], 1893, [https://en.wikipedia.org/wiki/Oslo Oslo], [https://en.wikipedia.org/wiki/Norway Norway], [http://www.ibiblio.org/wm/paint/auth/munch/ WebMuseum: Munch, Edvard] - Among theories advanced to account for the reddish sky in the background is the artist's memory of the effects of the powerful volcanic [https://en.wikipedia.org/wiki/1883_eruption_of_Krakatoa eruption of Krakatoa], which deeply tinted sunset skies red in parts of the Western hemisphere for months during 1883 and 1884, about a decade before Munch painted The Scream. This explanation has been disputed by scholars, who note that Munch was an expressive painter and was not primarily interested in literal renderings of what he had seen. </ref> ]]
  
 
A '''Search Explosion''' or node count explosion refers to a huge [[Branching Factor#EffectiveBranchingFactor|effective branching factor]] in [[Iterative Deepening|iterative deepening]], most often caused by [[Move Ordering|move ordering]] suddenly becomes worse due to new refutations found at higher depth, by re-searching the [[Root|root]] after [[Aspiration Windows|aspiration window]] [[Fail-High|fail-high]] or [[Fail-Low|fail-low]], and/or enabling too many [[Extensions|extensions]] and [[Check|checks]] in [[Quiescence Search|quiescence search]].  
 
A '''Search Explosion''' or node count explosion refers to a huge [[Branching Factor#EffectiveBranchingFactor|effective branching factor]] in [[Iterative Deepening|iterative deepening]], most often caused by [[Move Ordering|move ordering]] suddenly becomes worse due to new refutations found at higher depth, by re-searching the [[Root|root]] after [[Aspiration Windows|aspiration window]] [[Fail-High|fail-high]] or [[Fail-Low|fail-low]], and/or enabling too many [[Extensions|extensions]] and [[Check|checks]] in [[Quiescence Search|quiescence search]].  
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* [https://www.stmintz.com/ccc/index.php?id=344566  quiesce node explosion] by Mike Siler, [[CCC]], January 24, 2004
 
* [https://www.stmintz.com/ccc/index.php?id=344566  quiesce node explosion] by Mike Siler, [[CCC]], January 24, 2004
 
* [https://www.stmintz.com/ccc/index.php?id=358170 check extention explosion] by Aivaras Juzvikas, [[CCC]], April 03, 2004
 
* [https://www.stmintz.com/ccc/index.php?id=358170 check extention explosion] by Aivaras Juzvikas, [[CCC]], April 03, 2004
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==2005 ...==
 
 
* [https://www.stmintz.com/ccc/index.php?id=444261 node explosion] by [[David Dahlem]], [[CCC]], August 22, 2005
 
* [https://www.stmintz.com/ccc/index.php?id=444261 node explosion] by [[David Dahlem]], [[CCC]], August 22, 2005
 
* [https://www.stmintz.com/ccc/index.php?id=447270 Node count explosion] by [[Mridul Muralidharan]], [[CCC]], September 03, 2005
 
* [https://www.stmintz.com/ccc/index.php?id=447270 Node count explosion] by [[Mridul Muralidharan]], [[CCC]], September 03, 2005
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* [http://www.talkchess.com/forum/viewtopic.php?t=31505 Problem with exploding tree because of extensions] by [[Oliver Brausch]], [[CCC]], January 05, 2010 » [[Extensions]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=31505 Problem with exploding tree because of extensions] by [[Oliver Brausch]], [[CCC]], January 05, 2010 » [[Extensions]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=32148 Avoiding qsearch explosion] by [[Marco Costalba]], [[CCC]], January 29, 2010 » [[Quiescence Search]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=32148 Avoiding qsearch explosion] by [[Marco Costalba]], [[CCC]], January 29, 2010 » [[Quiescence Search]]
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==2015 ...==
 
 
* [http://www.open-chess.org/viewtopic.php?f=5&t=2984 Quiescence node explosion] by [[Sander Maassen vd Brink|sandermvdb]], [[Computer Chess Forums|OpenChess Forum]], June 01, 2016 » [[Quiescence Search]]
 
* [http://www.open-chess.org/viewtopic.php?f=5&t=2984 Quiescence node explosion] by [[Sander Maassen vd Brink|sandermvdb]], [[Computer Chess Forums|OpenChess Forum]], June 01, 2016 » [[Quiescence Search]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=63590 Q search explosion] by [[Colin Jenkins]], [[CCC]], March 30, 2017 » [[Quiescence Search]]
 
* [http://www.talkchess.com/forum/viewtopic.php?t=63590 Q search explosion] by [[Colin Jenkins]], [[CCC]], March 30, 2017 » [[Quiescence Search]]
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==2020 ...==
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* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=74345 search explosion] by [[Vivien Clauzon]], [[CCC]], July 02, 2020
  
 
=External Links=  
 
=External Links=  
 
* [https://en.wikipedia.org/wiki/Exponential_growth Exponential growth from Wikipedia]
 
* [https://en.wikipedia.org/wiki/Exponential_growth Exponential growth from Wikipedia]
 
* [https://en.wikipedia.org/wiki/The_Great_Explosion The Great Explosion from Wikipedia]
 
* [https://en.wikipedia.org/wiki/The_Great_Explosion The Great Explosion from Wikipedia]
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* The Jazz Explosion - [https://en.wikipedia.org/wiki/Goodbye_Pork_Pie_Hat Goodbye Pork Pie Hat], live at [https://en.wikipedia.org/wiki/The_Chance The Chance], [https://en.wikipedia.org/wiki/Poughkeepsie,_New_York Poughkeepsie, NY], February 05, 1989, various clips, [https://en.wikipedia.org/wiki/YouTube YouTube] Video  
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* The Jazz Explosion - [https://www.discogs.com/composition/d1f12044-c434-4581-843e-de8359d50772-Pud-Wud Pud Wud], live at [https://en.wikipedia.org/wiki/The_Chance The Chance], [https://en.wikipedia.org/wiki/Poughkeepsie,_New_York Poughkeepsie, NY], February 05, 1989, various clips, [https://en.wikipedia.org/wiki/YouTube YouTube] Video  
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: [[Videos#StanleyClarke|Stanley Clarke]], [[Videos#AllanHoldsworth|Allan Holdsworth]], [[Videos#RandyBrecker|Randy Brecker]], [https://en.wikipedia.org/wiki/Bernard_Wright Bernard Wright], [https://en.wikipedia.org/wiki/Steve_Smith_%28musician%29 Steve Smith] - dedicated to [https://en.wikipedia.org/wiki/Charles_Mingus Charles Mingus] and [[Videos#JacoPastorius|Jaco Pastorius]]
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: [[:Category:Allan Holdsworth|Allan Holdsworth]], [[:Category:Stanley Clarke|Stanley Clarke]], [[:Category:Randy Brecker|Randy Brecker]], [https://en.wikipedia.org/wiki/Bernard_Wright Bernard Wright], [[:Category:Steve Smith|Steve Smith]]
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: {{#evu:https://www.youtube.com/watch?v=q21KNH9hXwQ|alignment=left|valignment=top}}
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: {{#evu:https://www.youtube.com/watch?v=p9ki_XgppHw|alignment=left|valignment=top}}
  
 
=References=  
 
=References=  
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'''[[Search|Up one Level]]'''
 
'''[[Search|Up one Level]]'''
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[[Category:Edvard Munch]]
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[[Category:Randy Brecker]]
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[[Category:Stanley Clarke]]
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[[Category:Allan Holdsworth]]
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[[Category:Steve Smith]]

Latest revision as of 20:06, 5 July 2020

Home * Search * Search Explosion

Edvard Munch - The Scream[1]

A Search Explosion or node count explosion refers to a huge effective branching factor in iterative deepening, most often caused by move ordering suddenly becomes worse due to new refutations found at higher depth, by re-searching the root after aspiration window fail-high or fail-low, and/or enabling too many extensions and checks in quiescence search.

See also

Leonid's Positions

Chess positions posted by Leonid Liberman in CCC let many engines "explode" [2]

    
    
    
    
    
    
    
    
     
    
    
    
   
      
    
     
♛  ♚  ♛ 
  ♞♛♞  ♝
 ♞ ♙ ♞ ♝
  ♜♞♜  ♕
 ♘♕ ♕♘ ♕
   ♕   ♗
  ♖♕♖  ♗
♕  ♔  ♕ 

q2k2q1/2nqn2b/1n1P1n1b/2rnr2Q/1NQ1QN1Q/3Q3B/2RQR2B/Q2K2Q1 w - - [3]

Forum Posts

2000 ...

2010 ...

2020 ...

External Links

Allan Holdsworth, Stanley Clarke, Randy Brecker, Bernard Wright, Steve Smith

References

  1. ↑ Edvard Munch - One of several versions of the painting The Scream (or The Cry), National Gallery, 1893, Oslo, Norway, WebMuseum: Munch, Edvard - Among theories advanced to account for the reddish sky in the background is the artist's memory of the effects of the powerful volcanic eruption of Krakatoa, which deeply tinted sunset skies red in parts of the Western hemisphere for months during 1883 and 1884, about a decade before Munch painted The Scream. This explanation has been disputed by scholars, who note that Munch was an expressive painter and was not primarily interested in literal renderings of what he had seen.
  2. ↑ Remember Leonid Liberman (author of LLCHESS)? by Dann Corbit, CCC, May 23, 2015
  3. ↑ One mate to solve... by Leonid, CCC, May 30, 2001

Up one Level

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