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Rybka (Computer)
Number of games in database: 190
Years covered: 2005 to 2014
Overall record: +120 -26 =34 (76.1%)*
   * Overall winning percentage = (wins+draws/2) / total games
      Based on games in the database; may be incomplete.
      10 exhibition games, odds games, etc. are excluded from this statistic.

MOST PLAYED OPENINGS
With the White pieces:
 Sicilian (23) 
    B90 B97 B80 B91 B22
 Ruy Lopez (19) 
    C92 C78 C84 C99 C88
 Sicilian Najdorf (11) 
    B90 B97 B91
 Ruy Lopez, Closed (10) 
    C92 C84 C99 C88 C96
 Petrov (6) 
    C42 C43
 Semi-Slav (5) 
    D43 D46 D45 D44
With the Black pieces:
 Sicilian (31) 
    B51 B92 B28 B40 B47
 Semi-Slav (8) 
    D47 D43 D44
 French Defense (7) 
    C16 C18 C11 C10 C03
 Sicilian Najdorf (6) 
    B92 B90 B96 B98
 Grunfeld (5) 
    D91 D85 D78 D79 D97
 Sicilian Taimanov (4) 
    B47 B49 B48
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   Stockfish vs Rybka, 2009 0-1
   Rybka vs Shredder, 2009 1-0
   Rybka vs Deep Sjeng, 2009 1-0
   Rybka vs Shredder, 2007 1-0
   Rybka vs Pandix, 2010 1-0
   Deep Junior vs Rybka, 2010 0-1
   Rybka vs HIARCS, 2010 1-0
   The King vs Rybka, 2006 0-1
   Deep Gandalf vs Rybka, 2006 0-1
   Rybka vs Diep, 2007 1-0

NOTABLE TOURNAMENTS: [what is this?]
   17th World Computer Chess Championship (2009)
   15th World Computer Chess Championship (2007)
   Paderborn Computer Championship (2006)
   6th International CSVN Tournament (2006)
   10th International Computer Tournament (2010)
   Clash of the Computer Titans (2007)
   WCCC 2006 (2006)

GAME COLLECTIONS: [what is this?]
   2012/2013/2014 Tournaments by wanabe2000
   Computer - GM games 2003-2007 by biglo
   nTCEC Computer Chess Tournament by shoshonte
   Brilliancies by computers by ryanpd
   Odds games #3 by WhiteRook48
   tea4twonty's favorite games by tea4twonty
   Brilliant games from chess computers by gabriel112000

Search Sacrifice Explorer for Rybka (Computer)
Search Google for Rybka (Computer)


RYBKA (COMPUTER)
(born 2004) Czech Republic

[what is this?]
Rybka (Czech for "little fish") is a computer chess engine designed by IM Vasik G Rajlich. It supports both single processor and SMP systems. Iweta Radziewicz Rajlich is the main tester & Hans van der Zijden is one of her operators. Jeroen Noomen & Jiri Dufek co-authored her opening book. At the WCCC 2006 (2006), Rybka, playing under the name Rajlich, tied for 2nd place with Shredder (Computer), and behind the champion, Junior (Computer). Rybka won the 15th World Computer Chess Championship in Amsterdam, 2007 and the 16th World Computer Chess Championship in Beijing, September 28th to October 5th 2008 with 8.0/9 (+7 -0 =2). During 2009-10, she also became the World Computer Speed Chess Champion.

In 2011, the International Computer Games Association (ICGA) ruled that Raljich had plagiarized two other programs, Crafty and Fruit, disqualified him for life from competing in the World Computer Chess Championship and all other ICGA events, and stripped Rybka of the championship titles it had won in 2006 through 2010.


 page 1 of 8; games 1-25 of 190  PGN Download
Game  ResultMoves Year Event/LocaleOpening
1. Ikarus vs Rybka 0-157 2005 IPCCCB00 Uncommon King's Pawn Opening
2. Rybka vs Argonaut 1-037 2005 IPCCCC68 Ruy Lopez, Exchange
3. Rybka vs Shredder ½-½57 2005 IPCCCB90 Sicilian, Najdorf
4. Rybka vs Gandalf 1-046 2005 ?B12 Caro-Kann Defense
5. Spike vs Rybka 1-069 2005 15. IPCCCE39 Nimzo-Indian, Classical, Pirc Variation
6. Zappa vs Rybka 0-177 2005 IPCCCE12 Queen's Indian
7. Rybka vs Jonny 1-021 2005 Blitz:110'C69 Ruy Lopez, Exchange, Gligoric Variation, 6.d4
8. Deep Gandalf vs Rybka  0-128 2006 26th Dutch CCB47 Sicilian, Taimanov (Bastrikov) Variation
9. Rybka vs Deep Sjeng 1-057 2006 6th International CSVN TournamentB80 Sicilian, Scheveningen
10. Rybka vs Spike ½-½72 2006 Paderborn Computer ChampionshipB54 Sicilian
11. J Alvarez Nunez vs Rybka  0-144 2006 Copa Entel ,C85 Ruy Lopez, Exchange Variation Doubly Deferred (DERLD)
12. Rybka vs Zappa ½-½55 2006 WCCC 2006D46 Queen's Gambit Declined Semi-Slav
13. Rybka vs Shredder 1-060 2006 60m + 15s, ratedD43 Queen's Gambit Declined Semi-Slav
14. Deep Gandalf vs Rybka 0-146 2006 Paderborn Computer ChampionshipB70 Sicilian, Dragon Variation
15. Leitao vs Rybka ½-½43 2006 Torre ENTEL PCSD37 Queen's Gambit Declined
16. Rybka vs Deep Sjeng 1-059 2006 26th Dutch CCC42 Petrov Defense
17. Rybka vs E Arancibia  1-047 2006 Copa Entel ,B07 Pirc
18. Rybka vs The Baron 1-035 2006 6th International CSVN TournamentB33 Sicilian
19. Rybka vs Delfi 46 1-059 2006 WCCC 2006C11 French
20. Rybka vs HIARCS 1-098 2006 26th Dutch CCB90 Sicilian, Najdorf
21. Ant vs Rybka 0-134 2006 6th International CSVN TournamentA58 Benko Gambit
22. GridChess vs Rybka  0-157 2006 Paderborn Computer ChampionshipD97 Grunfeld, Russian
23. Rybka vs L Rojas  1-052 2006 Copa Entel ,D90 Grunfeld
24. Shredder vs Rybka 1-053 2006 WCCC 2006C44 King's Pawn Game
25. Rybka vs Slow Chess Blitz  1-057 2006 CCRL 40/40D43 Queen's Gambit Declined Semi-Slav
 page 1 of 8; games 1-25 of 190  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Rybka wins | Rybka loses  

Kibitzer's Corner
< Earlier Kibitzing  · PAGE 69 OF 79 ·  Later Kibitzing>
Apr-17-11  vonKrolock: <Rybka> was winning the match with a 3 points margin, then <Houdini> won three games and the match runs with the score evened after 22 games ... Live the 23th at http://www.tcec-chess.org/tcec_em.php
Apr-17-11  Xeroxx: This player is a computer cheater.
Apr-17-11
Premium Chessgames Member
  maxi: Care has to be taken in these computer events that they don't get a chance to consult a human.
Apr-17-11  vonKrolock: <Houdini> won the 23th game with black and now is leading with +1 - explanations!? <Rybka>, presumably, is not "tired" like Korchnoi vs Spassky in there 1977/78 candidates final...
Apr-18-11  Reggaalex: <Houdini 1.5a> is stronger and so I use <Rybka Aquarium 4> <<only with <Houdini>>> for analyses ^^. <The Rocket: "it's a tactical monster">. Long live Open Source.
Apr-18-11  Wyatt Gwyon: Anyone know when we might expect the Rybka-Houdini games on here?
Apr-18-11  vonKrolock: <Reggalex> Sure, even so the -3 start is puzzling.

<Wyatt Gwyon> When someone submit a game and cg.com staff aprove it.

... But is this not the ultimate clash between free (amateur !?) information and the 'pro' (official, protected) concept? ?!

Apr-18-11  Reggaalex: <vonKrolock> I agree, it's more than mysterious, but things have changed and Houdini is leading...till now. I think that this is the ultimate clash and it shows that free sciences are often more than expensive ones.
Apr-29-11
Premium Chessgames Member
  LIFE Master AJ: http://www.chessbase.com/newsdetail...

Amateur beats Rybka 4.0 - - - BLINDFOLDED!!!

Apr-29-11
Premium Chessgames Member
  Colonel Mortimer: <LIFE Master AJ: http://www.chessbase.com/newsdetail... Amateur beats Rybka 4.0 - - - BLINDFOLDED!!!>

Yeah - it's a hoax (just in case you needed that pointed out)

Apr-29-11
Premium Chessgames Member
  LIFE Master AJ: Actually - that was just a jab. (See my forum - I posted there first - for how I described this incident.)

I would no sooner believe that this chump could beat Rybka blindfolded ... you might as well tell me that all the individuals (on my ignore list) had banded together and bought me a Birthday present.

Or the sun went Super-Nova.

And if I continue - in this vein - then I should really move it to Odd Lie page.

Apr-29-11
Premium Chessgames Member
  LIFE Master AJ: On a serious note - can anyone here tell me how he managed such a feat???

Sure - he cheated. (That goes without saying.) But how?

I am - if nothing else - eternally curious. AND ... I know for certain that the "engine-heads" (no offense) are VERY smart guys ... if anyone can figure this mystery out ... they can!

Apr-29-11  anandrulez: 20,000 books - Pi to a million digits . Sure! Boy gimme a break . Just because we are readers doesn't men you can sell anything !
Apr-29-11
Premium Chessgames Member
  LIFE Master AJ: But ... ... ... and here is the million-dollar-question ...

IF he really did defeat Rybka, then how did he manage it? (Or was it some form of elaborate hoax?)

I remember a similar "PSYCHIC" trick. Something about spending a long amount of time inside a frozen block of ice. Some darn fool tried the exact same thing ... and died after only a few days.

Those things are NEVER for real.

Apr-29-11  polarmis: <LIFE Master AJ: On a serious note - can anyone here tell me how he managed such a feat???>

A chess player who was watching noted he mixed up b & d when calling out moves, so it sounded as though he was listening to the moves and misheard. A funny detail is that on move 13 he said he'd calculated everything to around move 30...

On the Pi digits & books - of course it's also nonsense, but ChessBase's analysis is flawed. He claims to be able to memorise a book in 15 minutes, not a whole day. And he never recited all the digits but would just be asked, e.g. for the 2,000,001st :) Presumably he'd claim to be able to memorise pages of digits in a second or two...

Apr-29-11
Premium Chessgames Member
  Jim Bartle: i'm totally convinced it's real. Who needs to see, you know, the moves of the game or anything like that?
Apr-29-11
Premium Chessgames Member
  Jim Bartle: Whoops, here are the alleged games: http://rybkaforum.net/cgi-bin/rybka...
Apr-29-11
Premium Chessgames Member
  alexmagnus: The official world record in Pi memorization is 50 000 digits; the inofficial, but a widely recognized one is 100 000.
Jun-04-11  kia0708: Elo ratings of the strongest chess engines:

1 Houdini 1.5a 3010
2 Deep Rybka 4 2955
3 Stockfish 2.01 JA 2910
4 Critter 0.90 SSE42 2888
5 Komodo64 1.3 JA 2830
6 Naum 4.2 2825
7 Deep Shredder 12 2800
8 Gull 1.1 2785
9 Deep Fritz 12 32b 2780
9 Deep Sjeng c't 2010 32b 2780
10 Protector 1.4.0 x64 2756
12 spark-1.0 SSE42 2750
13 HIARCS 13.2 MP 32b 2746
14 Zappa Mexico II 2706
15 Deep Onno 1-2-70 2682
16 Deep Junior 12 2680
17 Hannibal 1.0a 2679
18 Toga II 1.4 beta5c BB 2670
19 Umko 1.1 SSE42 2631
20 Loop 13.6/2007 2618
21 Jonny 4.00 32b 2605
22 Crafty

Housini, RYBKA and Stockifish are just amazing !

Jun-09-11  DrMAL: I used to regularly wail on Northwestern University's chess program in 1979 (yes I am a geezer) then the computer WC until 1980. Its rating was supposedly around 2080 on its big CDC Cyber mainframe but its play often resembled a chimp more than a champ.

I drew Rybka 4.1 once, so what if it was during a power outage?

Jun-09-11
Premium Chessgames Member
  PinnedPiece: <Slyusarchuck v Rybka>

I submit the doctor could not have done it without the blindfold, which would have been an excellent cover for an earpiece or....?

Nevertheless, this trick is so impressive that I am going to change out my avatar for this one, before someone else grabs it:

http://www.chessbase.com/news/2011/...

,

Jun-28-11
Premium Chessgames Member
  Colonel Mortimer: Rybka disqualified and stripped of titles..
http://www.chessvibes.com/reports/r...
Jun-28-11  shadowleaf04: I wonder what Chessbase will do now after this latest development. Will there be a sale of Rybka? That's just wishful thinking on my part. :)
Jun-29-11
Premium Chessgames Member
  Check It Out: Rybka has been stripped of it's world champion titles, but not before Rajlich made a boatload of money selling Rybka software. He'll have to send those trophies back though...
Jun-29-11  dx9293: Shocking...

Wow, the computer chess world has just been turned upside down!

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