Fabien Letouzey
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Fabien Letouzey,
a French computer chess and games programmer and developer of the chess programsFruit[2],Chess-64[3] andSenpai, theOthello programsTurtle,Snail[4],Piloth[5],Decapus (10x10) andOctopus (8x8), the latter Gold medal winners at the20th Computer Olympiad, Leiden 2017, theUCI-Winboard adapterPolyGlot, and theInternational Draughts programsToy[6], andScan, which surprised the Draughts scene in winning the18th Computer Olympiad, Leiden 2015, and defended its title in2016 and2017 respectively. Fabien further works withRémi Coulom to improve hisGo playing programCrazy Stone due todeep learning[7].
Contents
Fruit
The release ofFruit until version 2.1 underGNU General Public License was a "revolution" in computer chess in 2005 - anopen source program was "suddenly" competitive with the long time leading programsShredder andJunior, as demonstrated at theWCCC 2005, where Fruit became runner up behindZappa. After the great success of Reykjavik, and Fabien Letouzey met his professional colleagues, he decided to close the source and to go commercial - short after Fruit derivate appeared, based on the source code of Fruit 2.1, most notablyToga[8] byThomas Gaksch. Fabien finished his commercial computer chess career so far in 2007[9]. Fruit 2.3+ is nonGPL with full rights given toRyan Benitez, while Fruit 2.1 is now owned by theFree Software Foundation[10].
Anniversary
In March 2014, ten years after the initial Fruit 1.0 release, Fabien announced and published his newopen source engineSenpai[11], and an independent fork of Fruit 2.1,Fruit Reloaded by Fabien Letouzey,Daniel Mehrmann andRyan Benitez[12], both hosted bySteve Maughan's Computer Chess Programming[13][14].
Photos
Fruit
Winners 2005,Stefan Meyer-Kahlen,Fabien Letouzey,Anthony Cozzie andGian-Carlo Pascutto
Scan
10 years later, Fabien's programScan won10x10 Draughts at the18th Computer Olympiad[17][18]
and defended its title at the19th and20th Computer Olympiad so far
Selected Publications
1999
- Francesco de Comité,François Denis,Rémi Gilleron,Fabien Letouzey (1999).Positive and Unlabeled Examples help Learning. The 10th International Conference on Algorithmic Learning Theory, available asps
2000 ...
- Fabien Letouzey,François Denis,Rémi Gilleron (2000).Learning from Positive and Unlabeled Examples. ALT 2000: 71-85, available asps
- François Denis,Rémi Gilleron,Fabien Letouzey (2005).Learning from positive and unlabeled examples.Theoretical Computer Science, Vol. 348, No. 1
2010 ...
- Ching-Nung Lin,Fabien Letouzey,Shi-Jim Yen (2019).Decapus wins Othello 10 × 10 tournament.ICGA Journal, Vol. 41, No. 1 »21st Computer Olympiad 2018
Forum Posts
2000 ...
- calculating the PV using MTD byFabien Letouzey,CCC, September 11, 2002 »MTD(f),Principal Variation
- Re: Fruit - Question for Fabien byFabien Letouzey,CCC, March 11, 2004 »Node Types,Transposition Table,Principal Variation Search
- Fruit, trying to answer various missed posts byFabien Letouzey,CCC, March 15, 2004
- Fruit 1.0 UCI (with source code) now available byFabien Letouzey,CCC, March 17, 2004
2005 ...
- Safe I/O (repeated) byFabien Letouzey,Winboard Forum, February 11, 2005
- To Fruit's author Fabien Letouzey and commercial manager Joachim Rang byMarc Lacrosse,CCC, November 17, 2005
2010 ...
- Fabien's open letter to the community byTord Romstad,CCC, January 23, 2011[20] »Fabien Rybka Letter
- Fabien's open letter to the community byTord Romstad,OpenChess Forum, January 23, 2011
- Interview with Fabien (from the year 2005) ... byFrank Quisinsky,CCC, January 25, 2011
- What is a derivative? byFabien Letouzey,CCC, January 27, 2011 »Clones
- GPL / GNU Licence enforcement byFabien Letouzey,CCC, January 27, 2011 »Free Software Foundation
- Programming language features for computer chess byFabien Letouzey,CCC, January 27, 2011
- Senpai 1.0 (new engine) byFabien Letouzey,CCC, March 17, 2014
- Fruit 1.0 anniversary byFabien Letouzey,CCC, March 17, 2014
2015 ...
- Re: Draughts at the ICGA Olympiad byFabien Letouzey,CCC, April 30, 2015
- A little more info about Scan by Fabien Letouzey byJesús Muñoz,CCC, July 06, 2015
- Scan byFabien Letouzey,World Draughts Forum, July 08, 2015
External Links
- Fabien Letouzey's ICGA Tournaments
- The alternative to Crafty, Interview with Fabien Letouzey byFrank Quisinsky,Arena Chess GUI 3.0 - Archive , Page 7, 96, April 05, 2005,also hosted byEd Schröder[21]
- Senpai Chess Engine - Computer Chess Programming hosted bySteve Maughan
- Fruit Reloaded - Computer Chess Programming hosted bySteve Maughan
- Scan hosted byHarm Jetten
References
- ↑PhotosWCCC 2005 byGerd Isenberg
- ↑Fruit Chess Engine by Fabien Letouzey
- ↑Re: Congratulations to Anthony ! byRyan Benitez,CCC, September 27, 2007
- ↑Programmes d'Othello® et de Reversi pour Linux
- ↑Fabien Letouzey, othello programmer of Snail, Turtle and Piloth.
- ↑Toy byFabien Letouzey fromAll 10x10 programs in the world
- ↑Behind the scenes of Fine Art with report onComputer Go UEC Cup, March 2017 @ 9:00
- ↑Toga II byThomas Gaksch and Fabien Letouzey
- ↑Fruit - pure playing strength
- ↑Re: When will come a new Toga Engine? byRyan Benitez fromCCC, April 10, 2009
- ↑Senpai 1.0 (new engine) byFabien Letouzey,CCC, March 17, 2014
- ↑Fruit 1.0 anniversary byFabien Letouzey,CCC, March 17, 2014
- ↑Senpai Chess Engine - Computer Chess Programming hosted bySteve Maughan
- ↑Fruit Reloaded - Computer Chess Programming hosted bySteve Maughan
- ↑Draughts at the ICGA Olympiad byHarm Geert Muller,CCC, April 30, 2015
- ↑Computer Olympiad 2015 Leiden byBert Tuyt,World Draughts Forum, May 01, 2015
- ↑Image from the18th Computer Olympiad, 2015 byGerd Isenberg
- ↑Harm Jetten's draughts program - Performance
- ↑François DENIS Pulications
- ↑The Chess Mind Blog - More Computer Chess Controversy
- ↑Interview with Fabien (from the year 2005) ... byFrank Quisinsky,CCC, January 25, 2011
