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Sep-25-07
 | | BishopBerkeley: Here are the Rybka-Zappa games, posted at the Rybka Forum: http://rybkaforum.net/cgi-bin/rybka... Zappa has performed very impressively!
(: ♗ Bishop Berkeley ♗ :)
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| Sep-26-07 | | pawnofdoom: This computer is great! I've always thought Rybka was undefeatable, but suddenly this computer comes and is now crushing Rybka in a match! The only player/computer to beat Rybka |
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| Sep-26-07 | | scholes: Anthony C , author of zappa on game8 and game 9
"A black day for the Zappa team. Zappa got a very good position with Black in a Ruy Lopez, got in time trouble, blundered, and lost. After Qd8 Qb8 Qg8, White has the amazing plan of g5-g6, Kh5, and Bxh6, and can win despite being down a full exchange. Black could probably play for a win after e4 instead of Qxb5, or a draw after c3 instead of Qd8. In the second game, Rybka simply outplayed Zappa, and again got a position where its deep search was able to find some tricks. If you look at the position 5 full moves before Rxc4 it is hard to believe that Black is winning. However in the endgame Rybka traded rooks and despite having an eval of +7 (Zappa only +2 for White) the game was drawn. I actually think this match showcases the differences between Rybka and Zappa quite well. Zappa's knowledge is in its evaluation and its relatively accurate guesses about positions. Rybka's knowledge is in its intelligent search which lets it see very deeply very quickly. Interestingly most people associate a gradual score rise with a superiority in evaluation, when in fact it usually indicates a superiority in search, as the opponent is making many little blunders. In contrast when one engine has a superiority in evaluation the score will usually rise sharply after a move because suddenly the engine can secure a positional advantage (whatever the term is that the other engine is unaware of). Two years ago I would have told you that a good evaluation is more important than a good search, but now I am not so sure. At the very least Rybka has proven that even today's engines on big hardware (Zappa) still make many search errors, especially at such quick timecontrols as 60+20." |
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| Sep-26-07 | | scholes: rybka won game 8 and missed a win game 9 which would had tied the match |
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| Sep-26-07 | | whatthefat: <scholes>
Interesting post, thanks.
<A black day for the Zappa team. Zappa got a very good position with Black in a Ruy Lopez, got in time trouble, blundered, and lost.> I must say, I'm disappointed by the time controls for this match. |
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| Sep-28-07 | | chessamateur: YAY ZAPPA! Beating Rybka is a most impressive accomplishment. |
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| Sep-28-07 | | Red October: gimme your dirty pawn... like your Daddy's isolani at the bottom of the board..... |
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| Sep-28-07 | | MostlyAverageJoe: <Red October> Do you think that the conqueror of Rybka will become an overnight sensation (maybe at least in Montana ?-) Sad thing is: the author of Zappa wouldn't get the joke in either your or mine postings... |
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| Sep-28-07 | | Red October: <MAJ> naaah they're only in it for the money |
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| Sep-28-07 | | MostlyAverageJoe: <Red October> It would be nice if the author of Zappa freaked out and distributed his winner over the thing-fish absolutely free. But I am afraid that you can't do this on internet any more and that his program is strictly commercial. |
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| Sep-28-07 | | pawnofdoom: Is it possible to buy Zappa to use on your own computer just like you can do to Rybka? |
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| Sep-28-07 | | strifeknot: http://www.shredderchess.com/chess-... |
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| Oct-05-07 | | notyetagm: Anyone know when Chessbase will start selling <Zappa Mexico>? When you buy a Chessbase engine, they give you a free trial on their playchess.com server. Thanks.
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| Oct-05-07 | | Hesam7: <Zappa Mexico> is not a chessbase engine anymore. You can buy it from here: http://www.shredderchess.com/chess-... |
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| Oct-05-07 | | notyetagm: <Hesam7: <Zappa Mexico> is not a chessbase engine anymore. You can buy it from here: http://www.shredderchess.com/chess-...; Thanks for that info.
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| Nov-04-07 | | 7Heaven: Dear GOD!!! Why these computers have an elo rating of 3000+ ? this is insane!! |
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| Dec-21-07 | | sneaky pete: Happy birthday, Frank Zappa, and give my regards to all our friends in the Vegetable Kingdom. |
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| Dec-21-07 | | Red October: there a chip arriving too late .. to save our drowning Fritz.. he missed mate in 3 and every one can see he's gonna lose a piece if he has to save his Queen.... RIP Frank.... |
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| Dec-30-07 | | sallom89: <7Heaven: Dear GOD!!! Why these computers have an elo rating of 3000+ ? this is insane!!> hahahah don't think its touchable by a grandmaster lol. |
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Jan-29-08
 | | Open Defence: from the games I have seen in the Rybka and HIARCS forums (fora?) (where the time stamp and depth is in the PGN) it seems Zappa Mexico is lethal when it has enough time to calculate, most of its errors comes at a low ply move in a couple of seconds ... but one thing I am curious about..at a very long time control is Rybka stronger than Zappa Mexico ? |
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| Feb-03-08 | | moroisthebest: any idea how Zappa Mexico II rates v. Rybka? |
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Feb-03-08
| | Open Defence: <moroisthebest> in the CEGT 40/20 rating list it figures at number 11 below the Zap!Chess Zanzibar which is a little surprising http://www.husvankempen.de/nunn/40_... in the 40/40 rating list it seems to be second
http://computerchess.org.uk/ccrl/40... |
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| Feb-03-08 | | moroisthebest: thank you |
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| Apr-26-08 | | timhortons: i beat zappa mexico in bullet using the hippo, there so many ways to transpose the game to it.Rybka 3.0 is coming out in the next few months with an anti hippo algorithm special for his icc opponent on bullet and blitz [Event "ICC 1 0 u"]
[Site "Internet Chess Club"]
[Date "2008.04.26"]
[Round "-"]
[White "timhortonsknigt"]
[Black "LinuxKnight"]
[Result "1-0"]
[ICCResult "Black forfeits on time"]
[WhiteElo "1350"]
[BlackElo "2712"]
[Opening "Mieses opening"]
[ECO "A00"]
[NIC "VO.13"]
[Time "16:46:42"]
[TimeControl "60+0"]
<LinuxKnight(C) kibitzes: Zappa Mexico II welcomes you! Interface: ChessPartner 5.4> |
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| Jun-27-08 | | mmmsplay10: what is the hippo?
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