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Fischerle

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'''[[Main Page|Home]] * [[Engines]] * Fischerle'''

[[FILE:fischerlelogo.jpg|border|right|thumb|link=http://www.stuckardt.de/index.php/schachengine-fischerle.html| Fischerle Logo ]]

'''Fischerle''',<br/>
a [[Java|Java-based]] chess engine that has been developed by [[Roland Stuckardt]]. Fischerle implements the [[UCI]] protocol. It is recommended to employ it from within the [[Arena]] environment. Additionally, Fischerle has an own [[GUI]] providing supplementary configuration and testing features; in principle, it can thus be used independently of UCI based chess GUIs. Fischerle is available for download at its author's web pages .

=Technology=
Fischerle’s representation of chess positions is based on the [[Rotated Bitboards|rotated bitboard]] model. Fischerle employs some well-known techniques of enhanced [[Alpha-Beta|alpha-beta]] minimax search:
* [[NegaScout]] algorithm
* [[Iterative Deepening|Iterative deepening (ID)]] and [[Internal Iterative Deepening|IID]]
* [[Aspiration Windows|Aspiration windows]]
* [[History Heuristic|History heuristic]]
* [[Killer Heuristic|Killer heuristic]]
* [[Hash Table|Hash tables]]
: [[Transposition Table|Transposition table]]
: [[Evaluation Hash Table|Evaluation cache]]
* [[Quiescence Search|Quiescence search]]
* [[Extensions|Search extensions:]]
: [[Promotions]]
: [[Passed Pawn Extensions|7th rank Passed pawn extensions]]
: [[Check Extensions|Check evasions]] only by a singular / a few moves
: [[Recapture Extensions|Winning recaptures]]
: [[Singular Extensions|Singular extensions]] (restricted implementation that doesn't apply at [[Node Types|Cut nodes]] and that considers only [[Transposition Table|transposition table]] moves as singularity candidates the value of which is marked there as exact or lower bound)
: extension by several plies at the very moment a [[Pawn Endgame|pawn endgame]] is reached
* [[Tactics|Tactically]] painless [[Reductions|reductions]] according to the [[AEL-Pruning|enhanced model]] suggested by [[Ernst A. Heinz]]
: [[Null Move Pruning#AdaptiveNullMovePruning|Adaptive Null Move Pruning]]
: [[Futility Pruning#Extendedfutilityprunning|Extended Futility Pruning]]
: [[Razoring#LimitedRazoring|Limited Razoring]]
* [[Late Move Reductions]]
* [[Interior Node Recognizer|Interior node recognition]] similar to Heinz’s proposal <ref>[[Ernst A. Heinz]] ('''1998'''). ''[http://people.csail.mit.edu/heinz/dt/node33.html Efficient Interior-Node Recognition].'' [[ICGA Journal#21_3|ICCA Journal, Vol. 21, No. 3]]</ref>
* Dedicated scoring functions for some particular [[Endgame|endgame]] types

The static [[Evaluation|evaluation]] parameters of Fischerle are amenable to external fine [[Automated Tuning|tuning]] based on a concept of so-called efb (''evaluation factor block'') files, thus enabling the user to influence, within certain bounds, Fischerle’s playing style (e. g. to prefer closed positions, etc.). Fischerle comes with its own, small [[Opening Book|opening book]], covering about 220K positions and some 540K moves. Fischerle supports [[Pondering|pondering]] via its [[UCI]] interface.

=Latest Version=
Fischerle '''0.9.80 SE''' <ref>[http://www.stuckardt.de/rsdokumente/Fischerle_0_9_80_SE_64_or_32.rar Fischerle 0.9.80 SE] (March 24, 2017)</ref> - a slightly more aggressive forward [[Pruning|pruning]] scheme is now applied; [[Quiescence Search|quiescence search]] has been mildly refined (adding, in particular, [[Delta Pruning|delta pruning]]); the piece value assigned to [[Bishop|bishops]] and the [[Bishop Pair|bishop pair]] bonus have been slightly reduced; [[King Safety|king safety]] ealuation has been refined; the mate approaching scheme has been enhanced.

=Etymology=
[[FILE:DieBlendung.jpg|border|right|thumb|link=https://www.dorisneidl.net/illustration?lightbox=image_14xa| Die Blendung by [[:Category:Doris Neidl|Doris Neidl]] <ref>[https://www.dorisneidl.net/illustration Die Blendung - Illustrations - Gallery], capturing the crazy and wondrous journey of [https://en.wikipedia.org/wiki/Sinology Sinologist] [https://en.wikipedia.org/wiki/Auto-da-F%C3%A9#Plot_and_themes Peter Kien]. Copyright © 2013 by [[:Category:Doris Neidl|Doris Neidl]]</ref> ]]

''"Ein Mensch, was ka Schach spielt, ist ka Mensch"'' <ref>"A person who does not play chess, is not a man", [https://en.wikipedia.org/wiki/Direct_speech direct speech] in [https://en.wikipedia.org/wiki/Viennese_German Viennese German] of Fischerle to [https://en.wikipedia.org/wiki/Auto-da-F%C3%A9#Plot_and_themes Kien], in
[https://en.wikipedia.org/wiki/Elias_Canetti Elias Canetti] ('''1936'''). ''[http://de.wikipedia.org/wiki/Die_Blendung Die Blendung]''. Wien 1936, [https://en.wikipedia.org/wiki/Editio_princeps Editio princeps], p. 191.</ref>

==Auto-da-Fé==
Fischerle <ref>Fischerle - [https://en.wikipedia.org/wiki/Diminutive Diminutive form] of [https://en.wikipedia.org/wiki/Fischer Fischer]</ref> is named after a famous character of [https://en.wikipedia.org/wiki/Elias_Canetti Elias Canetti’s] novel [http://de.wikipedia.org/wiki/Die_Blendung „Die Blendung“] ([https://en.wikipedia.org/wiki/Auto-da-F%C3%A9 „Auto-da-Fé“]) <ref>[https://en.wikipedia.org/wiki/Auto-da-f%C3%A9 Auto-da-fé from Wikipedia]</ref> <ref>[http://members4.boardhost.com/readliterature/msg/1266773491.html Talk Literature: Auto-da-Fé - Elias Canetti] by Lale, February 21, 2010</ref> , which plays in [https://en.wikipedia.org/wiki/Vienna Vienna] <ref>[https://en.wikipedia.org/wiki/History_of_the_Jews_in_Vienna History of the Jews in Vienna - from Wikipedia]</ref> around protagonist [https://en.wikipedia.org/wiki/Auto-da-F%C3%A9#Plot_and_themes Peter Kien], a middle-aged philologist and [https://en.wikipedia.org/wiki/Sinology Sinologist]: '''Siegfried Fischerle''' <ref>[http://www.worldcat.org/search?q=au%3ARiedner%2C+Nicola.&qt=hot_author Nicola Riedner] ('''1994'''). ''[http://www.worldcat.org/title/canettis-fischerle-eine-figur-zwischen-masse-macht-und-blendung/oclc/30632821&referer=brief_results Canettis Fischerle: eine Figur zwischen Masse, Macht und Blendung]''. [https://en.wikipedia.org/wiki/K%C3%B6nigshausen_%26_Neumann Königshausen und Neumann], page 40, footnote 174, [http://books.google.de/books?id=P87wy187bqAC&lpg=PA1&vq=page%2040&hl=de&pg=PA40#v=onepage&q&f=true Google books], "Peter Jansen behauptet fälschlicherweise, daß Fischerle eigentlich Fischer hieße und nur aufgrund seiner Gestalt das Verkleinerungssuffix durch andere hinzubekommen hätte". Peter Jansen ('''1980'''). ''Die Komik des Sprechens. Zur sprachlich-ästhetischen Erfahrung des Komischen am Beispiel von Canettis Roman "Die Blendung"''. in [http://de.wikipedia.org/wiki/Sprache_im_technischen_Zeitalter Sprache im technischen Zeitalter], 76</ref> , a [https://en.wikipedia.org/wiki/Jews Jewish] <ref>further in [http://www.worldcat.org/search?q=au%3ARiedner%2C+Nicola.&qt=hot_author Nicola Riedner] ('''1994'''). ''[http://www.worldcat.org/title/canettis-fischerle-eine-figur-zwischen-masse-macht-und-blendung/oclc/30632821&referer=brief_results Canettis Fischerle: eine Figur zwschischen Masse, Macht und Blendung]''. [https://en.wikipedia.org/wiki/K%C3%B6nigshausen_%26_Neumann Königshausen und Neumann], page 41-42, During the time of writing of the novel (1930/31) the German given name [https://en.wikipedia.org/wiki/Siegfried_%28given_name%29 Siegfried] for Jewish children was indication of Jewish will for [https://en.wikipedia.org/wiki/Cultural_assimilation assimilation], footnote 179, Konrad Krause ('''1943'''). ''[http://www.worldcat.org/title/judische-namenwelt/oclc/2041274 Die jüdische Namenswelt]''. [http://de.wikipedia.org/wiki/Essener_Verlagsanstalt Essener Verlagsanstalt], Publisher of the [https://en.wikipedia.org/wiki/Nazi_Party Nazi Party], S. 11, "Denn es ist bekannt, in welchem Ausmaß die Juden [...] unsere herrlichen alten Namen z.T. nahezu entwertet haben. Dieses Schicksal erlitten besonders die 'Sieg'namen ..."</ref> [https://en.wikipedia.org/wiki/Kyphosis hunchbacked] [https://en.wikipedia.org/wiki/Dwarf dwarf] and [https://en.wikipedia.org/wiki/Procuring_%28prostitution%29 pander], is a [[Morphy#ChessFever|chess addict]] whose dream is it to go to America to challenge chess champion [https://en.wikipedia.org/wiki/Jos%C3%A9_Ra%C3%BAl_Capablanca José Raúl Capablanca] in order to get rich and famous. Canetti wrote his novel in the years 1930/31, coincidentally more than one decade before [https://en.wikipedia.org/wiki/Nazi_Germany Nazi German] [https://en.wikipedia.org/wiki/Feldwebel#Reichswehr_and_Wehrmacht Oberfeldwebel] [https://en.wikipedia.org/wiki/Siegfried_Fischer Siegfried Fischer] was decorated with the [https://en.wikipedia.org/wiki/Knight%27s_Cross_of_the_Iron_Cross Knight's Cross of the Iron Cross], Jewish artist and poet [https://en.wikipedia.org/wiki/Peter_Kien Peter Kien] died in [https://en.wikipedia.org/wiki/Auschwitz_concentration_camp Auschwitz concentration camp], and more than two decades before chess genius [https://en.wikipedia.org/wiki/Bobby_Fischer Bobby Fischer] entered the international chess scene <ref>Bobby Fischer, whose mother was Jewish, and whose possible biological father was also Jewish, made numerous [https://en.wikipedia.org/wiki/Antisemitism Anti-semitic] statements, see [https://en.wikipedia.org/wiki/Bobby_Fischer#Anti-semitic_statements Bobby Fischer - Anti-semitic statements - from Wikipedia]</ref> .

==Fischers Fritz==
The German [https://en.wikipedia.org/wiki/Tongue-twister tongue-twister] "Fischers Fritz fischt frische Fische. Frische Fische fischt Fischers Fritz." (Fisher's Fritz fishes fresh fish, fresh fish are fished by fisher's Fritz) is not related to [https://en.wikipedia.org/wiki/Fritz_Fischer_%28biathlete%29 Fritz Fischer] but may be to Fischerle's famous brother [[Fritz]]?

==Publications==
<ref>[http://www.tour-literatur.de/sekundlit_autoren/canetti_sekundlit.htm Elias Canetti: Sekundärliteratur] (German)</ref>
* [https://en.wikipedia.org/wiki/Elias_Canetti Elias Canetti] ('''1936'''). ''[http://de.wikipedia.org/wiki/Die_Blendung Die Blendung]''. Wien 1936, [https://en.wikipedia.org/wiki/Editio_princeps Editio princeps] (German)
* [https://en.wikipedia.org/wiki/Elias_Canetti Elias Canetti] ('''1946'''). ''[https://en.wikipedia.org/wiki/Auto-da-F%C3%A9 Auto-da-Fe]''. Translated by [https://en.wikipedia.org/wiki/Veronica_Wedgwood Veronica Wedgwood]
* Peter Jansen ('''1980'''). ''Die Komik des Sprechens. Zur sprachlich-ästhetischen Erfahrung des Komischen am Beispiel von Canettis Roman "Die Blendung"''. in [http://de.wikipedia.org/wiki/Sprache_im_technischen_Zeitalter Sprache im technischen Zeitalter], 76 (German)
* [http://www.worldcat.org/search?q=au%3ARiedner%2C+Nicola.&qt=hot_author Nicola Riedner] ('''1994'''). ''[http://www.worldcat.org/title/canettis-fischerle-eine-figur-zwischen-masse-macht-und-blendung/oclc/30632821&referer=brief_results Canettis Fischerle: eine Figur zwschischen Masse, Macht und Blendung]''. [https://en.wikipedia.org/wiki/K%C3%B6nigshausen_%26_Neumann Königshausen und Neumann] (German)
* [http://www.barnesandnoble.com/c/harriet-murphy Harriet Murphy] ('''1996'''). ''[http://www.barnesandnoble.com/w/canetti-and-nietzsche-harriet-murphy/1115275227?ean=9780791431337 Canetti and Nietzsche: Theories of Humor in Die Blendung]''. [https://en.wikipedia.org/wiki/State_University_of_New_York_Press State University of New York Press] <ref>[https://en.wikipedia.org/wiki/Friedrich_Nietzsche Friedrich Nietzsche from Wikipedia]</ref>
* [https://en.wikipedia.org/wiki/Ritchie_Robertson Ritchie Robertson] ('''1999'''). ''[http://www.questia.com/library/1826902/the-jewish-question-in-german-literature-1749-1939 The 'Jewish Question' in German Literature 1749 - 1939 Emancipation and Discontents]''. [https://en.wikipedia.org/wiki/Oxford_University_Press Oxford University Press] <ref>[https://en.wikipedia.org/wiki/Jewish_question Jewish question from Wikipedia]</ref>
* [http://fds.duke.edu/db/aas/German/wcd2 William Collins Donahue] ('''2001'''). ''[http://www.questia.com/library/104788411/the-end-of-modernism-elias-canetti-s-auto-da-fae The End of Modernism : Elias Canetti's Auto-da-fâe]''. [https://en.wikipedia.org/wiki/University_of_North_Carolina_Press University of North Carolina Press] <ref>[http://fds.duke.edu/db/aas/German/faculty/wcd2/publications German: Willkommen]</ref>
* [http://www.barnesandnoble.com/c/marcus-puknatis Marcus Puknatis] ('''2002,2007'''). ''[http://www.barnesandnoble.com/w/elias-canettis-die-blendung-typische-sterreichische-nationalliteratur-marcus-puknatis/1114561378?ean=9783638802758 Elias Canettis 'Die Blendung' - Typische Österreichische Nationalliteratur?]'' [https://de.wikipedia.org/wiki/GRIN_Verlag GRIN Verlag] (German)
* Yun Chen ('''2003'''). ''[http://docserv.uni-duesseldorf.de/servlets/DocumentServlet?id=2534 Canetti und die chinesische Kultur]''. [https://en.wikipedia.org/wiki/Thesis Dissertation], [https://en.wikipedia.org/wiki/University_of_D%C3%BCsseldorf Heinrich Heine University Düsseldorf] (German)
* [http://mek.oszk.hu/08200/08294/ Hidas Ildikó] ('''2008'''). ''Elias Canettis Roman Die Blendung im Schnittpunkt zeitgenössischer Diskurse''. Ph.D. thesis, [https://en.wikipedia.org/wiki/P%C3%A1zm%C3%A1ny_P%C3%A9ter_Catholic_University Pázmány Péter Catholic University], [https://en.wikipedia.org/wiki/Piliscsaba Piliscsaba], [http://mek.oszk.hu/08200/08294/08294.pdf pdf] (German)

=See also=
* [[Bobby]]
* [[Morphy#Capablanca|Capablanca Edition]]
* [[Morphy#ChessFever|Chess Fever (Shakhmatnaya goryachka)]]

=Forum Posts=
==2014==
* [http://www.talkchess.com/forum/viewtopic.php?t=50858 Nice move by Fischerle (Division 7 engine in my Amateurs)] by [[Graham Banks]], [[CCC]], January 11, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=51250 A good 64-bit Java chess engine unknown here] by [http://www.talkchess.com/forum/profile.php?mode=viewprofile&u=881 Ruxy Sylwyka], [[CCC]], February 12, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=51324 No GUI problems with Fischerle] by [[Norbert Raimund Leisner]], [[CCC]], February 18, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=51279&start=3 Re: 32-bit and 64-bit java engines] by [[Roland Stuckardt]], [[CCC]], February 24, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=52327 New Fischerle Versions (64 and 32 Bit)] by [[Roland Stuckardt]], [[CCC]], May 15, 2014
* [http://www.talkchess.com/forum/viewtopic.php?t=53967 New Fischerle Version: 0.9.60] by [[Roland Stuckardt]], [[CCC]], October 07, 2014
==2015 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=57676 New Fischerle Version: 0.9.65] by [[Roland Stuckardt]], [[CCC]], September 17, 2015
* [http://www.talkchess.com/forum/viewtopic.php?t=59624 New Fischerle Version: 0.9.70 SE] by [[Roland Stuckardt]], [[CCC]], March 25, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=63546 New Fischerle Version: 0.9.80 SE] by [[Roland Stuckardt]], [[CCC]], March 24, 2017

=External Links=
==Chess Engine==
* [http://www.stuckardt.de/index.php/schachengine-fischerle.html Schachengine Fischerle] (German)
: [http://www.stuckardt.de/index.php/schachengine-fischerle/techniken-im-ueberblick.html Schachengine Fischerle - Techniken im Überblick]
: [http://www.stuckardt.de/index.php/schachengine-fischerle/benutzeroberflaeche.html Schachengine Fischerle - Benutzeroberfläche]
* [http://www.computerchess.org.uk/ccrl/4040/cgi/compare_engines.cgi?family=Fischerle&print=Rating+list&print=Results+table&print=LOS+table&print=Ponder+hit+table&print=Eval+difference+table&print=Comopp+gamenum+table&print=Overlap+table&print=Score+with+common+opponents Fischerle] in [[CCRL|CCRL 40/40]]
==Misc==
* [https://en.wiktionary.org/wiki/Fischer Fischer - Wiktionary]
* [https://en.wikipedia.org/wiki/Fischer Fischer from Wikipedia]
: [https://en.wikipedia.org/wiki/Bobby_Fischer Bobby Fischer from Wikipedia]
* [https://en.wikipedia.org/wiki/Auto-da-F%C3%A9 Auto-da-Fé from Wikipedia]
* [https://en.wikipedia.org/wiki/Fisherman Fisherman from Wikipedia]
* [https://en.wikipedia.org/wiki/Fish Fish from Wikipedia]
* [https://en.wikipedia.org/wiki/Fish_anatomy Fish anatomy from Wikipedia]
* [http://www.muno.pl/news/fischerle-the-big-sleep-u-cover-album-konkurs/ Fischerle] - The Love Bruises, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: {{#evu:https://www.youtube.com/watch?v=0A-3xT-7ouo|alignment=left|valignment=top}}

=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:UCI]]
[[Category:Java]]
[[Category:Doris Neidl]]
[[Category:Chess Legend]]
[[Category:Fiction]]
[[Category:Fish]]
[[Category:Music]]

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