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Chiron (Computer)
Number of games in database: 23
Years covered: 2006 to 2014
Overall record: +4 -12 =7 (32.6%)*
   * Overall winning percentage = (wins+draws/2) / total games.

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Most played openings
B33 Sicilian (2 games)
B01 Scandinavian (2 games)

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(born 2002) Italy

[what is this?]
Ubaldo Andrea Farina developed Chiron for the WinBoard 2 protocol, and later it also supported the UCI format as well. Salvo Spitaleri has authored its opening book since 2006.

References: (1)

 page 1 of 1; 23 games  PGN Download 
Game  ResultMoves YearEvent/LocaleOpening
1. Spike vs Chiron  ½-½762006WCCC 2006B33 Sicilian
2. Zappa vs Chiron 1-0352006WCCC 2006B00 Uncommon King's Pawn Opening
3. Chiron vs PARSOS 1-0872006WCCC 2006B54 Sicilian
4. Chiron vs Delfi 46  ½-½362006WCCC 2006B12 Caro-Kann Defense
5. Jonny vs Chiron  1-0382006WCCC 2006E91 King's Indian
6. Chiron vs Crafty 0-1592006WCCC 2006B27 Sicilian
7. Chiron vs FIBChess  1-0302006WCCC 2006B56 Sicilian
8. ETABETA vs Chiron 0-1192006WCCC 2006B33 Sicilian
9. Shredder vs Chiron  1-0532006WCCC 2006D45 Queen's Gambit Declined Semi-Slav
10. Chiron vs Diep  ½-½572006WCCC 2006B92 Sicilian, Najdorf, Opocensky Variation
11. IsiChess vs Chiron  0-1502006Paderborn Computer ChampionshipA62 Benoni, Fianchetto Variation
12. Chiron vs Ikarus  0-1512006Paderborn Computer ChampionshipB96 Sicilian, Najdorf
13. Chiron vs GridChess  0-1412006Paderborn Computer ChampionshipB30 Sicilian
14. Chiron vs Diep  ½-½592006Paderborn Computer ChampionshipD37 Queen's Gambit Declined
15. Jonny vs Chiron  1-0482006Paderborn Computer ChampionshipA46 Queen's Pawn Game
16. Chiron vs Rybka  0-1612007CCT9C14 French, Classical
17. Loop vs Chiron ½-½1902007CCT9A20 English
18. Chiron vs Crafty  ½-½502007CCT9C99 Ruy Lopez, Closed, Chigorin,
19. Chiron vs Vitruvius 0-1662013nTCEC - Stage 2bE90 King's Indian
20. Komodo vs Chiron 1-0542013nTCEC - Stage 3B01 Scandinavian
21. Stockfish vs Chiron  1-0522013nTCEC - Stage 3C12 French, McCutcheon
22. Chiron vs Vitruvius  0-1542013nTCEC - Stage 3B01 Scandinavian
23. Spike vs Chiron ½-½1972014TCEC - Season 6 - Stage 2C97 Ruy Lopez, Closed, Chigorin
 page 1 of 1; 23 games  PGN Download 
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Chiron wins | Chiron loses  

Kibitzer's Corner
Dec-28-06  Karpova: The guy on the left is Ubaldo Andrea Farina - the creator of <Chiron>
Premium Chessgames Member
  whiteshark: <Chiron> is a chess engine with support of both UCI and Winboard 2 protocols.

Development of <Chiron> started in the fall of 2002 and it has been under continuous development ever since.

When it debuted at the Italian Computer Chess Championship in June 2003, it was a rather weak Winboard engine with a playing strength of about 2100 Elo points.

Its strenght grew over the years, it started to arrive consistently second at the italian tournaments and reached good ratings in the various rating lists.

In 2006 support of UCI protocols was added. At the beginning of 2007, it had a rating of about 2700 and 2650 Elo points respectively on the CCRL and CEGT rating lists.

Starting from february 2009, having lost the source code of the latest development version and wanting to implement bitboards, it underwent a major rewrite. In November of the same year it won, with an old version, its first italian championship and won it again in 2010.

<Chiron> has been commercially released on October 9, 2011.

In these nine years Chiron has improved a lot thanks also to ideas found in strong open source engines, in computer chess forums and websites, etc. In particular I would like to thank Fabien Letouzey, Tord Romstad, Robert Hyatt, the Ippolit guys, Ed Schröder, Bruce Moreland, Ernst Heinz and many others.

Thanks to Miguel Ballicora, Eugene Nalimov and Daniel Shawul for the probing code of their tablebases/bitbases, to Pradu Kannan, Gerd Isenberg and Lasse Hansen for the magic bitboards, to "Sesse" and Stephan Vermeire for the CTG specifications, to Ilari Pihlajisto for cutechess-cli that I've been using since 2009 for testing Chiron with very fast games.

Thanks to all the people that tested Chiron in the past, among them Ciro Vignotto, Leo Dijksman, Olivier Deville, Günther Simon, Lars Hallerström, the testers of CEGT and CCRL and many others.

Thanks to Wilhelm Hudetz for the Chiron logo.

Finally, thanks to Salvo Spitaleri who has been the opening book author of Chiron since 2006.


Aug-04-14  mrandersson: Nice chess engine from what iv seen and heard from a club friend. The engine reaches quite fast depths and often gives nice lines.

Does take a bit longer than the top 3 engines at finding some puzzles thou.

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