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Subject: Re: B-Amin (IM) vs tribbles (Rybka Preview 2) (ICC 26 Dec 05) 1-0

Author: Uri Blass

Date: 10:46:51 12/26/05

Go up one level in this thread


On December 26, 2005 at 09:51:25, Majd Al-Ansari wrote:

>Thank you very much for sharing this interesting game.  What version of Rybka
>was it played on and what hardware?  It seems that Rybka here did not take
>advantage of an open "b" file and left that file open thus allowing white to
>mount an attack on the kingside.  When I run my Rybka I cannot reproduce move
>16. Nb4? which was an obvious waste of time.

Rybka finds Nb4 and changes it's mind later

B-Amin - tribbles, ICC 3 3 Internet Chess Club 2005
r4rk1/p2q1pbp/b1n1p1p1/2p1Pn2/2Pp3P/3P1NP1/P3QPB1/R1B1RNK1 b - - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

16...Rab8
  =  (-0.22)   Depth: 3   00:00:00
16...Rab8
  =  (-0.17)   Depth: 4   00:00:00
16...Rab8 17.g4
  =  (-0.17)   Depth: 5   00:00:00
16...Rab8 17.N1d2 Qc7
  =  (-0.15)   Depth: 6   00:00:00  23kN
16...Rfb8 17.g4 Nh6
  =  (-0.20)   Depth: 6   00:00:00  36kN
16...Rfb8 17.N1d2 Qe7 18.Nb3
  =  (0.01)   Depth: 7   00:00:00  62kN
16...Rab8 17.N1d2 Rfc8 18.g4
  =  (-0.08)   Depth: 7   00:00:00  71kN
16...Nb4 17.g4 Nh6 18.a3
  =  (-0.10)   Depth: 7   00:00:01  77kN
16...Nb4 17.g4 Nh6 18.a3 Nc6
  =  (-0.08)   Depth: 8   00:00:01  145kN
16...Nb4 17.g4 Nh6 18.Ng5 Bb7 19.Bxb7
  =  (0.00)   Depth: 9   00:00:02  240kN
16...Rab8 17.N1d2 Rfc8 18.g4 Nfe7 19.Nb3
  =  (-0.08)   Depth: 9   00:00:03  268kN
16...Rab8 17.N1d2 Rfc8 18.g4 Nfe7 19.Nb3 Nb4
  =  (-0.04)   Depth: 10   00:00:05  477kN

(,  26.12.2005)




  Thne move 20. Rac8?  why not Rb8
>(which my Rybka wants to play).

My rybka does not likes Rb8 but Rac8 after a very long search
It needs more than 18 minutes to find that move.

B-Amin - tribbles, ICC 3 3 Internet Chess Club 2005
r4rk1/p2q1pb1/b1n1p1p1/2p1Pn2/2Pp2NP/P2P1N2/4QPB1/R1B1R1K1 b - - 0 1

Analysis by Rybka 1.0 Beta 32-bit:

20...Rab8
  =  (-0.13)   Depth: 3   00:00:00
20...Rab8
  =  (-0.13)   Depth: 4   00:00:00
20...Rab8 21.Bf4
  =  (-0.07)   Depth: 5   00:00:00
20...Rfb8 21.a4
  =  (-0.11)   Depth: 5   00:00:00
20...Rfb8 21.Nf6+ Bxf6 22.exf6 Rb3
  =  (0.19)   Depth: 6   00:00:00  18kN
20...Rab8 21.Bf4 Qe7
  =  (0.00)   Depth: 6   00:00:00  22kN
20...Rab8 21.Bf4 Qc7 22.Qd2
  =  (-0.08)   Depth: 7   00:00:00  36kN
20...Rab8 21.Nf6+ Bxf6 22.exf6 Rfc8 23.h5 gxh5
  ²  (0.42)   Depth: 8   00:00:01  87kN
20...Qe7 21.Bg5 Qc7 22.Nf6+ Bxf6 23.exf6 Rab8
  =  (0.16)   Depth: 8   00:00:01  100kN
20...Qe7 21.Bg5 Qc7 22.Nf6+ Bxf6 23.Bxf6 Rab8 24.Rab1
  ²  (0.26)   Depth: 9   00:00:02  164kN
20...Qe7 21.Bg5 Qc7 22.Nf6+ Kh8 23.Rab1 Rab8 24.h5
  ²  (0.37)   Depth: 10   00:00:04  312kN
20...Qe7 21.Bg5 Qc7 22.Nf6+ Kh8 23.Rab1 Rab8 24.h5 Rfc8
  ²  (0.37)   Depth: 11   00:00:09  713kN
20...Qe7 21.Bg5 Qc7 22.h5 Rfb8 23.h6 Bf8 24.Rab1 Bb7
  ±  (0.80)   Depth: 12   00:00:15  1224kN
20...Qe7 21.Bg5 Qc7 22.h5 Rab8 23.h6 Bh8 24.Nf6+ Bxf6 25.exf6
  ±  (0.95)   Depth: 13   00:00:52  4394kN
20...Kh8 21.h5 Rfc8 22.h6 Bf8 23.Rb1 Bb7 24.Bg5 Rab8 25.Nh4
  ±  (0.88)   Depth: 13   00:01:38  8411kN
20...Kh8 21.h5 Rfc8 22.h6 Bf8 23.Rb1 Bb7 24.Bg5 Rab8 25.Nh4
  ±  (0.88)   Depth: 14   00:01:45  9023kN
20...Kh8 21.h5 Rfb8 22.hxg6 fxg6 23.Ng5 Bb7 24.Qf3 Kg8 25.Nf6+
  +-  (1.99)   Depth: 15   00:04:36  21703kN
20...Qe7 21.Bg5 Qc7 22.h5 Rfb8 23.h6 Bf8 24.Rab1 Bb7 25.Nh4
  ±  (1.08)   Depth: 15   00:05:05  23767kN
20...Qe7 21.h5 Bb7 22.Bg5 Qc7 23.h6 Bh8 24.Nh4 Na5 25.Nxf5
  ±  (1.35)   Depth: 16   00:10:09  46394kN
20...Rac8 21.Nf6+ Bxf6 22.exf6 Qd8 23.Bg5 Kh8 24.h5 Rg8 25.Rab1
  ±  (1.31)   Depth: 16   00:18:28  82008kN
20...Rac8 21.Nf6+ Bxf6 22.exf6 Qd8 23.Bg5 Kh7 24.Rab1 Qd6 25.Bd2
  ±  (1.36)   Depth: 17   00:21:55  97752kN

(,  26.12.2005)



Nothing strange in the moves that were played.

Uri



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