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Subject: Re: Rybka preview plays Be4 in DB-Kasparov 2nd game 1997!

Author: Stuart Cracraft

Date: 13:13:13 12/20/05

Go up one level in this thread


On December 20, 2005 at 15:47:41, piet de hoop wrote:

>Hello
>
>I was just looking for some typical testpositions and came along this much
>discussed one.
>
>Rybka (on a 1 GHZ laptop) wants to play Be4 (seee below analysis output) which
>was actually played by DB.
>The move that according Kasparov wasn't a move from a computer but from a human.
>Perhaps Rybka is fine-tuned on this position?
>
>Regards
>
>Piet
>
>
>[D] r1r1q1k1/6p1/3b1p1p/1p1PpP2/1Pp5/2P4P/R1B2QP1/R5K1 w - - 0 1

If my dumb research program (eval = material value, pc/sq, and limited
pre-search changes to the evaluation tables calculated once) can
find Be4, it is not a special move!

Poor Garry! Maybe he's still fuming after all these years...

Stuart

Alpha=-397 Beta=403 Maxdepth=9999999 MaxTime=1666666 xboard=0
Itr/Max Mv   Time   Score Nodes PV
 1/ 4  a2a7 43  0.00       46 a2a7
 2/ 7  a2a8 31  0.00      516 a2a8 c8a8 a1a8 e8a8 c2e4
 3/ 9  a2a7 23  0.01     2806 a2a7 a8a7 a1a7 c8d8
 4/11  a2a7 27  0.02     6011 a2a7 a8a7 a1a7 c8d8 c2e4
 5/13  a2a7 22  0.07    21271 a2a7 a8a7 a1a7 c8c7 a7a1 e8e7
 6/15  c2e4 17  0.23    75684 c2e4 a8a2 a1a2 d6b8 a2a1 c8d8 a1d1
 7/17  f2f3 12  1.27   397310 f2f3 a8a2 a1a2 e8d7 a2a1 c8d8 f3e4 d6e7
 8/18  f2f3 16  2.37   742768 f2f3 a8a2 a1a2 e8d7 f3e4 d6b8 a2a1 b8a7 g1h1 c8d8
 9/22  c2e4 11 12.49  3617889 c2e4 a8a2 f2a2 c8d8 a2a6 e8d7 a1a5 d8b8 a6c6 d7c6
d5c6
10/26  a2a7 17 46.21 13032318 a2a7 e8d8 g1h1 a8a7 f2a7 c8b8 c2e4 d8e7
11/31  c2e4 11 144.64 41146939 c2e4 a8a2 f2a2 c8d8 a2a6 e8d7 a1a5 d8b8 a6c6
12/33  c2e4 16 252.00 73195284 c2e4 c8d8 g1h1 a8a2 a1a2 e8d7 a2a7 d6b4
13/


>
>Analysis by Rybka 1.0 Preview 32-bit:
>
>1.De3
>  ±  (0.71)   Diepte: 3   00:00:00
>1.Ta7
>  ±  (0.92)   Diepte: 3   00:00:00
>1.Ta7
>  ±  (0.92)   Diepte: 4   00:00:00
>1.Db6
>  ±  (1.11)   Diepte: 4   00:00:00
>1.Db6 Lc7
>  ±  (0.93)   Diepte: 5   00:00:00
>1.Db6 Lc7 2.Dc5
>  ±  (1.11)   Diepte: 6   00:00:00  17kN
>1.Db6 Lc7 2.Dc5 Tab8
>  ±  (0.82)   Diepte: 7   00:00:00  19kN
>1.Le4 Txa2 2.Dxa2 Tb8 3.Da7
>  ±  (1.03)   Diepte: 7   00:00:00  20kN
>1.Le4 Dd8 2.Kh2 Txa2 3.Dxa2 Dd7
>  ±  (1.03)   Diepte: 8   00:00:01  45kN
>1.Le4 Dd8 2.Kh2 Txa2 3.Dxa2 Kf7 4.Da7+ Dc7
>  ±  (1.05)   Diepte: 9   00:00:01  58kN
>1.Le4 Dd8 2.Kh2 Txa2 3.Dxa2 Kf7 4.Da7+ Dc7 5.De3
>  ±  (1.11)   Diepte: 10   00:00:02  92kN
>1.Le4 Tcb8 2.Kh2 Txa2 3.Dxa2 Lc7 4.Kg3 Dh5 5.Dd2
>  ±  (1.17)   Diepte: 11   00:00:06  271kN
>1.Le4 Tcb8 2.Kh2 Txa2 3.Dxa2 Lc7 4.Kg3 Dh5 5.Dd2 Td8
>  ±  (1.20)   Diepte: 12   00:00:11  519kN
>1.Le4 Tcb8 2.Kh2 Txa2 3.Dxa2 Lc7 4.Kg3 Dd8 5.Dd2 Dd6 6.Kg4
>  ±  (1.07)   Diepte: 13   00:00:16  743kN
>1.Le4 Tcb8 2.Kh2 Txa2 3.Txa2 Ta8 4.Txa8 Dxa8 5.Db6 Db8 6.Dc6 Lc7 7.De6+ Kh7
>  ±  (1.12)   Diepte: 14   00:00:28  1383kN
>1.Le4 Tcb8 2.Ta6 Txa6 3.Txa6 Dd8 4.Kh2 Ta8 5.Db6 Dxb6 6.Txb6 Lf8 7.d6 Td8
>  ±  (1.18)   Diepte: 15   00:01:40  4398kN
>1.Le4 Tcb8 2.Ta6 Txa6 3.Txa6 Dd8 4.Kh2 Tb7 5.Kg3 Dd7 6.De3 Kf7 7.Ta8 Tb8
>  ±  (1.23)   Diepte: 16   00:02:24  6643kN
>1.Le4 Tcb8 2.Ta6 Txa6 3.Txa6 Dd8 4.Kh2 Tb7 5.Kg3 Dd7 6.De3 Kf7 7.Ta8 Tb8
>  ±  (1.27)   Diepte: 17   00:04:16  12078kN
>1.Le4 Tcb8 2.Ta6 Txa6 3.Txa6 Dd8 4.Kh2 Tb7 5.Kg3 Dd7 6.De3 Kf7 7.Ta8 Tb8
>  ±  (1.26)   Diepte: 18   00:06:07  17482kN
>1.Le4 Tcb8 2.Ta6 Txa6 3.Txa6 Dd8 4.Kh2 Tb7 5.Kg3 Kf7 6.Ta5 De7 7.Ta1 Dd7
>  ±  (1.25)   Diepte: 19   00:10:59  31028kN
>
>(,  20.12.2005)



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