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Subject: Re: Fritz cannot find a move that wins a pawn

Author: Uri Blass

Date: 21:28:18 11/06/03

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On November 06, 2003 at 15:42:54, K. Burcham wrote:

>
>Deep Fritz wants Bxe4, Uri, at depth 20/51, +.56
>
> [D] 1rbqr1k1/R4pb1/6p1/1ppPp3/2p1n2N/2P1N2P/1PB2PP1/R2Q2K1 w - - 0 1
>
>Deep Fritz 7:
>
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Red8 5.g5 Kh7
>  ²  (0.34)   Depth: 9/24   00:00:00  415kN
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Ra8 5.g5 Red8 6.Kf1 Rxa7
>  ²  (0.28)   Depth: 10/25   00:00:00  944kN
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Red8 5.R1a5 Bc8 6.g5 Rd6
>  ²  (0.44)   Depth: 11/27   00:00:01  2676kN
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Ra8 5.Nc2 Rxa7 6.Rxa7 Rb8 7.g5 Kh7
>  ²  (0.41)   Depth: 12/30   00:00:04  6418kN
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Bh6 5.R1a5 Bc8 6.Rc7 Rf8 7.Rxc5 Bxe3
>8.fxe3 Rd8
>  ²  (0.28)   Depth: 13/32   00:00:16  24577kN
>1.Bxe4 Qxh4 2.Qf3 Bb7 3.Qg4 Qxg4 4.hxg4 Bh6 5.R1a5 Bc8 6.Rc7 Rf8 7.Rxc5 Bxe3
>  ²  (0.28)   Depth: 14/37   00:00:36  56206kN
>1.Bxe4 Qxh4 2.Qf3 f5 3.g4 Qg5 4.h4 Qxh4 5.gxf5 Rf8 6.Qg2 Rb6 7.b3 cxb3 8.fxg6
>  ²  (0.44)   Depth: 15/37   00:01:29  140709kN
>1.Bxe4 Qxh4 2.Qf3 Qf4 3.d6 Qxf3 4.Bxf3 e4 5.Bg4 Bxg4 6.hxg4 Rbd8 7.d7 Re7 8.Rd1
>Kf8 9.g5
>  ²  (0.28)   Depth: 16/38   00:04:36  433396kN
>1.Bxe4 Qxh4 2.Qf3 Qf4 3.d6 Qxf3 4.Bxf3 e4 5.Bg4 Bxg4 6.hxg4 Rbd8 7.R1a5 Be5
>8.Rxb5
>  ²  (0.28)   Depth: 17/41   00:13:54  1317845kN
>1.Bxe4 Qxh4 2.Qf3 Qf4 3.d6 Qxf3 4.Bxf3 e4 5.Bg4 Bxg4 6.hxg4 Red8 7.d7 f6 8.f3
>exf3 9.gxf3
>  ²  (0.44)   Depth: 18/43   00:30:59  2958384kN
>1.Bxe4 Qxh4 2.Qf3 Qf4 3.d6 Qxf3 4.Bxf3 Rd8 5.Nd5 Kf8 6.Ne7 Rxd6 7.Nc6 e4 8.Nxb8
>  ²  (0.44)   Depth: 19/46   01:11:29  6883629kN
>1.Bxe4 Qxh4 2.Qf3 Qf4 3.d6 Qxf3 4.Bxf3 e4 5.Bg4 Bxg4 6.hxg4 Red8 7.d7 Rb6 8.Rc7
>Rd6 9.Rxc5
>  ²  (0.56)   Depth: 20/51   02:40:57  15624173kN


I analyzed it with Fritz8 during the game and it found nothing after 4.Bxf3
the score went down.

After 4.Bxf3 in your line Fritz likes 4...Bxe3 5.fxe3 e4 with almost equal
evaluation but if I continue it with 6.Bg4 it says Bxg4 7.hxg4 Red8 8.R5a6 and
now the score starts to go up for white iteration after iteration(another proof
that Fritz does not understand the position and cannot be trusted and 4...Bxe3
is not the only alternative for black).

I feel that Fritz shows total lack of understanding and even some bean counter
is better than it.

possible line after Nxg6 is Nd6 Qh5 e4 Nf4 Re5 Qe2 Bh6 g3 Qf6 Neg2 and only now
Fritz after a long think started to fail low.

I remember that Fritz failed low after another line  Nd6 Qh5 e4 Nf4 Qf6 g3
Re5 Qe2 and I simply decided that I cannot trust it.

Uri





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