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'''[[Main Page|Home]] * [[Engines]] * Freedom'''
 
'''[[Main Page|Home]] * [[Engines]] * Freedom'''
  
[[FILE:Eugène Delacroix - La liberté guidant le peuple.jpg|border|right|thumb| [[Arts#Delacroix|Eugène Delacroix]] - [https://fr.wikipedia.org/wiki/La_Libert%C3%A9_guidant_le_peuple La Liberté guidant le peuple] <ref>[[Arts#Delacroix|Eugène Delacroix]], [https://fr.wikipedia.org/wiki/La_Libert%C3%A9_guidant_le_peuple La Liberté guidant le peuple] 1830, oil on canvas, Romantic history painting. [https://en.wiktionary.org/wiki/commemorate Commemorates] the [https://en.wikipedia.org/wiki/July_Revolution French Revolution of 1830], [https://en.wikipedia.org/wiki/Mus%C3%A9e_du_Louvre Musée du Louvre]</ref> ]]  
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[[FILE:Eugène Delacroix - La liberté guidant le peuple.jpg|border|right|thumb| [[:Category:Eugène Delacroix|Eugène Delacroix]] - [https://fr.wikipedia.org/wiki/La_Libert%C3%A9_guidant_le_peuple La Liberté guidant le peuple] <ref>[[:Category:Eugène Delacroix|Eugène Delacroix]] - [https://fr.wikipedia.org/wiki/La_Libert%C3%A9_guidant_le_peuple La Liberté guidant le peuple] 1830, oil on canvas, Romantic history painting. [https://en.wiktionary.org/wiki/commemorate Commemorates] the [https://en.wikipedia.org/wiki/July_Revolution French Revolution of 1830], [https://en.wikipedia.org/wiki/Mus%C3%A9e_du_Louvre Musée du Louvre]</ref> ]]  
  
 
'''Freedom''',<br/>
 
'''Freedom''',<br/>
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=Quotes=
 
=Quotes=
 
[[Tony Marsland]] mentioned Freedom, [[Papa]] and other programs participating the [[WCCC 1974]] in his handwritten notes <ref>[http://webdocs.cs.ualberta.ca/~tony/Public/Awit-Wita-ComputerChess/Wita-base/WitaNotes/wita-awit%2319-box2.pdf wita-awit#19-box2.pdf] from [http://webdocs.cs.ualberta.ca/~tony/Public/Awit-Wita-ComputerChess/Wita-base/WitaNotes/ Wita Notes] by [[Tony Marsland]]</ref> on the [[Jean Hayes Michie|Hayes]] and [[David Levy|Levy]] book <ref>[[Jean Hayes Michie|Jean E. Hayes]], [[David Levy]] ('''1976'''). ''[http://www.getcited.org/pub/101724802 The world computer chess championship, Stockholm 1974]''. University Press (Edinburgh) ISBN 0852242859</ref> :
 
[[Tony Marsland]] mentioned Freedom, [[Papa]] and other programs participating the [[WCCC 1974]] in his handwritten notes <ref>[http://webdocs.cs.ualberta.ca/~tony/Public/Awit-Wita-ComputerChess/Wita-base/WitaNotes/wita-awit%2319-box2.pdf wita-awit#19-box2.pdf] from [http://webdocs.cs.ualberta.ca/~tony/Public/Awit-Wita-ComputerChess/Wita-base/WitaNotes/ Wita Notes] by [[Tony Marsland]]</ref> on the [[Jean Hayes Michie|Hayes]] and [[David Levy|Levy]] book <ref>[[Jean Hayes Michie|Jean E. Hayes]], [[David Levy]] ('''1976'''). ''[http://www.getcited.org/pub/101724802 The world computer chess championship, Stockholm 1974]''. University Press (Edinburgh) ISBN 0852242859</ref> :
  [[Freedom]] and [[Papa]] both use [[Mobility|mobility]] as their primary term in their [[Evaluation function|evaluation functions]]. As with [[Awit|Wita]], both use the ratio of computer's moves / opponent moves. Papa and Wita also multiply by the ratio of the squares controlled and Papa goes one step further and takes the logarithm of this product to form the "[[Papa#Entropy|entropy]]" of the position. The true merit of this entropy over the product ratio was not made clear, but it does ensure that in extreme situations the evaluation remains more closely bounded.  
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  [[Freedom]] and [[Papa]] both use [[Mobility|mobility]] as their primary term in their [[Evaluation Function|evaluation functions]]. As with [[Awit|Wita]], both use the ratio of computer's moves / opponent moves. Papa and Wita also multiply by the ratio of the squares controlled and Papa goes one step further and takes the logarithm of this product to form the "[[Papa#Entropy|entropy]]" of the position. The true merit of this entropy over the product ratio was not made clear, but it does ensure that in extreme situations the evaluation remains more closely bounded.  
 
<span id="FreedomCHAOS"></span>
 
<span id="FreedomCHAOS"></span>
 
=Freedom vs. CHAOS=
 
=Freedom vs. CHAOS=
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* [https://en.wikipedia.org/wiki/Academic_freedom Academic freedom]
 
* [https://en.wikipedia.org/wiki/Academic_freedom Academic freedom]
 
* [https://en.wikipedia.org/wiki/Daemon_%28technothriller_series%29#Freedom.E2.84.A2 Freedom™ - Daemon (technothriller series) from Wikipedia]
 
* [https://en.wikipedia.org/wiki/Daemon_%28technothriller_series%29#Freedom.E2.84.A2 Freedom™ - Daemon (technothriller series) from Wikipedia]
* [[Videos#Passport|Passport]] [[[https://en.wikipedia.org/wiki/Klaus_Doldinger|Doldinger]] Jubilee Concert - 1974] - [https://en.wikipedia.org/wiki/Eddie_Harris Freedom Jazz Dance], [https://en.wikipedia.org/wiki/YouTube YouTube] Video
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* [[:Category:Passport|Passport]] - [https://en.wikipedia.org/wiki/Eddie_Harris Freedom Jazz Dance], [https://www.discogs.com/de/Passport-2-And-Brian-Auger-Johnny-Griffin-Alexis-Korner-Volker-Kriegel-Pete-York-Doldinger-Jubilee-C/master/62209 Doldinger Jubilee Concert] @ 14th [https://en.wikipedia.org/wiki/Deutsches_Jazzfestival Deutsches Jazzfestival], [https://en.wikipedia.org/wiki/Frankfurt Frankfurt], September 27, 1974, [https://en.wikipedia.org/wiki/YouTube YouTube] Video
: [[Videos#KlausDoldinger|Klaus Doldinger]], [https://en.wikipedia.org/wiki/Johnny_Griffin Johnny Griffin], [https://en.wikipedia.org/wiki/Kristian_Schultze Kristian Schulze], [[Videos#BrianAuger|Brian Auger]] , [[Videos#VolkerKriegel|Volker Kriegel]], [https://en.wikipedia.org/wiki/Alexis_Korner Alexis Korner], [[Videos#WolfgangSchmid|Wolfgang Schmid]], [https://en.wikipedia.org/wiki/Curt_Cress Curt Cress], [https://en.wikipedia.org/wiki/Pete_York Pete York]
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: [[:Category:Klaus Doldinger|Klaus Doldinger]], [https://en.wikipedia.org/wiki/Johnny_Griffin Johnny Griffin], [https://en.wikipedia.org/wiki/Kristian_Schultze Kristian Schulze], [[:Category:Brian Auger|Brian Auger]], [[:Category:Volker Kriegel|Volker Kriegel]], [https://en.wikipedia.org/wiki/Alexis_Korner Alexis Korner], [[:Category:Wolfgang Schmid|Wolfgang Schmid]], [[:Category:Curt Cress|Curt Cress]], [https://en.wikipedia.org/wiki/Pete_York Pete York]
 
: {{#evu:https://www.youtube.com/watch?v=jBE7GQdeQYk|alignment=left|valignment=top}}
 
: {{#evu:https://www.youtube.com/watch?v=jBE7GQdeQYk|alignment=left|valignment=top}}
* [[Videos#BrianAuger|Brian Auger 's]] [https://en.wikipedia.org/wiki/Brian_Auger#Biography Oblivion Express] - [https://en.wikipedia.org/wiki/Eddie_Harris Freedom Jazz Dance],  [https://www.soundlite.it/live-concert-3/item/1177-fano-jazz-by-the-sea-2014.html Fano Jazz by the Sea 2014], [https://en.wikipedia.org/wiki/Fano Fano], [https://en.wikipedia.org/wiki/YouTube YouTube] Video
 
: {{#evu:https://www.youtube.com/watch?v=qZavJpqjWTU|alignment=left|valignment=top}}
 
  
 
=References=  
 
=References=  
 
<references />
 
<references />
 
 
'''[[Engines|Up one Level]]'''
 
'''[[Engines|Up one Level]]'''
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[[Category:Mainframe]]
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[[Category:Quotes]]
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[[Category:Eugène Delacroix]]
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[[Category:Passport]]
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[[Category:Brian Auger]]
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[[Category:Curt Cress]]
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[[Category:Klaus Doldinger]]
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[[Category:Volker Kriegel]]
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[[Category:Wolfgang Schmid]]

Latest revision as of 21:57, 20 January 2020

Home * Engines * Freedom

Freedom,
a chess program by Nils Barricelli. It participated at the First World Computer Chess Championship 1974 in Stockholm, running on a CDC Cyber 74. It lost versus the strong CHAOS and Ribbit in round 1 and 2 respectively, and had a lucky draw from Tell.

Barricelli, at that time affiliated with the Oslo University [2], had already experience in chess programming for his Symbioorganisms experiments at University of Manchester in 1962, where Alex Bell worked for him and wrote his first legal-move generator. Freedom's evaluation was primary based on the ratio of own and opponents mobility aka number of legal moves.

Quotes

Tony Marsland mentioned Freedom, Papa and other programs participating the WCCC 1974 in his handwritten notes [3] on the Hayes and Levy book [4] :

Freedom and Papa both use mobility as their primary term in their evaluation functions. As with Wita, both use the ratio of computer's moves / opponent moves. Papa and Wita also multiply by the ratio of the squares controlled and Papa goes one step further and takes the logarithm of this product to form the "entropy" of the position. The true merit of this entropy over the product ratio was not made clear, but it does ensure that in extreme situations the evaluation remains more closely bounded. 

Freedom vs. CHAOS

WCCC 1974, round 1, Freedom - CHAOS [5]:

[Event "WCCC 1974"]
[Site "Stockholm, Sweden"]
[Date "1974.08.05"]
[Round "1"]
[White "Freedom"]
[Black "CHAOS"]
[Result "0-1"]

1.d4 Nf6 2.c4 e6 3.c5 d6 4.cxd6 Qxd6 5.Nc3 Nc6 6.e3 Bd7 7.Bb5 Be7 
8.Nh3 O-O 9.Kf1 e5 10.Bd2 exd4 11.exd4 Bxh3 12.gxh3 Nxd4 13.Bc4 Qc6 
14.Bd5 Nxd5 15.Nxd5 Qxd5 16.Rg1 Nf3 17.Rxg7+ Kh8 18.Ke2 Qe4+ 19.Kf1 
Kxg7 20.Bc3+ f6 21.Kg2 Nh4+ 22.Kf1 Qg2+ 23.Ke2 Qe4+ 24.Kf1 Qh1+ 
25.Ke2 Qf3+ 26.Kf1 Qxd1+ 27.Rxd1 Bd6 28.Rd5 Bxh2 0-1 

External Links

Chess Program

Misc

Klaus Doldinger, Johnny Griffin, Kristian Schulze, Brian Auger, Volker Kriegel, Alexis Korner, Wolfgang Schmid, Curt Cress, Pete York

References

Up one Level