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Subject: Re: Orthodox human victory vs. Rybka

Author: Uri Blass

Date: 17:43:24 12/21/05

Go up one level in this thread


On December 21, 2005 at 19:08:59, Drexel,Michael wrote:

>On December 21, 2005 at 12:47:14, Vladimir Xern wrote:
>
>>On December 21, 2005 at 11:36:22, Drexel,Michael wrote:
>>
>>>This game can hardly count as "orthodox" victory.
>>>The win is solely based on very weak opening play by Rybka.
>>
>>Er, really? You mean to say that one side has to play worse than the other for
>>it to lose?
>
>No, I mean to say exactly what I wrote.
>
>And here I thought that's how every chess game was decided. And that
>>since Rybka played a particular part of the game worse and lost, it still
>>"doesn't count" as a legitimate win?
>
>Why not. Be happy with your legitimate win. :)
>
>Rybka Beta is not what you can call a well-rounded program yet. It plays the
>opening like a typical amateur engine (i.e. self-blockade of c-pawn or useless
>Bishop checks on b4,b5) and has a serious lack of endgame knowledge.

The opening moves are certainly result of too fast time control.

>
>Well damn, I guess I'm back to the drawing
>>board since winning apparently isn't good enough.
>>>Any good book has 1.e4 e6 2.e5 d6. Try to beat Rybka from there...
>>
>>If Rybka played anything that thoughtful, I wouldn't have gone for the Steinitz
>>variation in the first place, would I have?
>
>Getting the engine out of book on purpose at move two is Anti-Computer chess.
>There is nothing wrong with it but 1.e4 e6 2.e5 Sc6 3.d4 Bb4+? is not something
>you can call "orthodox line" by any means.

I tried rybka slightly positional and it likes 2...d6 and 3...d6.
It cannot play the moves in the game in non blitz time control.

New game - Rybka 1.0 Beta 32-bit, Blitz:1'+1"
rnbqkbnr/pppp1ppp/4p3/4P3/8/8/PPPP1PPP/RNBQKBNR b KQkq - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

2...Nc6
  =  (-0.07)   Depth: 3   00:00:00
2...Nc6
  =  (-0.05)   Depth: 4   00:00:00
2...Nc6 3.Nf3
  =  (-0.08)   Depth: 5   00:00:00
2...Nc6 3.Nf3 Nh6
  =  (-0.05)   Depth: 6   00:00:00  5kN
2...Nc6 3.Nf3 Nh6 4.Nc3
  =  (0.00)   Depth: 7   00:00:00  11kN
2...Nc6 3.Nf3 g5 4.h3 Nge7
  =  (-0.01)   Depth: 8   00:00:00  36kN
2...Nc6 3.Nf3 Nh6 4.Nc3 Nf5 5.d4
  =  (0.01)   Depth: 9   00:00:00  77kN
2...Nc6 3.Nf3 d6 4.Nc3 Nxe5 5.d4 Nxf3+ 6.Qxf3 Ne7
  =  (0.01)   Depth: 10   00:00:01  181kN
2...Nc6 3.Nf3 f6 4.d4 fxe5 5.Nxe5 Nf6 6.Nc3
  =  (0.08)   Depth: 11   00:00:05  516kN
2...Nc6 3.Nf3 f6 4.d4 fxe5 5.Nxe5 Nf6 6.Nc3 Bd6
  =  (0.05)   Depth: 12   00:00:13  1229kN
2...Nc6 3.Nf3 f6 4.d4 fxe5 5.Nxe5 Nf6 6.Nxc6 bxc6 7.Nc3
  =  (0.07)   Depth: 13   00:00:22  2122kN
2...d6 3.d4 dxe5 4.dxe5 Qxd1+ 5.Kxd1 Nd7 6.Nf3 Nh6 7.Bxh6
  =  (-0.02)   Depth: 13   00:00:38  3444kN
2...d6 3.d4 dxe5 4.dxe5 Qxd1+ 5.Kxd1 Nc6 6.Nf3 Nh6 7.Bxh6
  =  (-0.01)   Depth: 14   00:00:52  4738kN
2...d6 3.d4 dxe5 4.dxe5 Qxd1+ 5.Kxd1 Nc6 6.Nf3 Bc5 7.Nc3
  =  (-0.07)   Depth: 15   00:01:38  8775kN
2...d6 3.exd6 Bxd6 4.Nc3 Nc6 5.Nf3 Nf6 6.d4 0-0 7.Be2
  =  (-0.07)   Depth: 16   00:03:00  16000kN

(,  22.12.2005)

New game - Rybka 1.0 Beta 32-bit, Blitz:1'+1"
r1bqkbnr/pppp1ppp/2n1p3/4P3/3P4/8/PPP2PPP/RNBQKBNR b KQkq d3 0 1

Analysis by Rybka 1.0 Beta 32-bit:

3...Bb4+
  =  (-0.06)   Depth: 3   00:00:00
3...Nh6
  =  (-0.10)   Depth: 3   00:00:00
3...d6
  =  (-0.18)   Depth: 3   00:00:00
3...d6
  =  (0.01)   Depth: 4   00:00:00
3...Nh6
  =  (-0.05)   Depth: 4   00:00:00
3...Nh6 4.Nc3
  =  (0.00)   Depth: 5   00:00:00
3...Bb4+ 4.c3 Be7
  =  (-0.04)   Depth: 5   00:00:00
3...Bb4+ 4.c3 Be7 5.Qg4
  =  (-0.13)   Depth: 6   00:00:00  16kN
3...Bb4+ 4.c3 Ba5 5.Nf3 Nge7
  =  (-0.01)   Depth: 7   00:00:00  28kN
3...Bb4+ 4.c3 Ba5 5.Nf3 Nge7 6.Bd3
  =  (0.01)   Depth: 8   00:00:01  61kN
3...Bb4+ 4.c3 Ba5 5.Nf3 Nge7 6.Bd3 0-0
  =  (0.06)   Depth: 9   00:00:02  119kN
3...Nh6 4.Nc3 d6 5.Bb5 dxe5 6.Nf3
  =  (0.00)   Depth: 9   00:00:04  177kN
3...Nh6 4.Nf3 Nf5 5.Nc3 Bb4 6.a3 Bxc3+ 7.bxc3 0-0
  =  (0.07)   Depth: 10   00:00:06  308kN
3...Nh6 4.Nf3 Nf5 5.Nc3 Bb4 6.a3 Ba5 7.g4
  =  (0.06)   Depth: 11   00:00:10  647kN
3...Nh6 4.Nf3 Nf5 5.Nc3 Be7 6.Bd3 d5 7.Bxf5 exf5 8.0-0
  =  (0.09)   Depth: 12   00:00:18  1317kN
3...d6 4.Nf3 dxe5 5.dxe5 Qxd1+ 6.Kxd1 Nh6 7.Bxh6 gxh6 8.Nc3
  =  (-0.01)   Depth: 12   00:00:24  1875kN
3...d6 4.exd6 Bxd6 5.Nc3 Nf6 6.Nf3 0-0 7.Be2 Bd7 8.0-0
  =  (-0.10)   Depth: 13   00:00:40  3196kN
3...d6 4.exd6 Bxd6 5.Nc3 Nge7 6.Nf3 0-0 7.Ne4 e5 8.dxe5
  =  (-0.14)   Depth: 14   00:01:04  5078kN
3...d6 4.exd6 Bxd6 5.Nc3 Nge7 6.Nf3 0-0 7.Ne4 Ng6 8.Bd3
  =  (-0.09)   Depth: 15   00:01:42  8194kN
3...d6 4.exd6 Bxd6 5.Nc3 Nge7 6.Nf3 0-0 7.Ne4 Nd5 8.Bc4
  =  (-0.10)   Depth: 16   00:03:21  15685kN

(,  22.12.2005)



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