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Subject: Re: Nice attack

Author: Robert Hyatt

Date: 05:11:12 03/09/99

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On March 09, 1999 at 02:55:58, Steffen Jakob wrote:

>Hi!
>
>Today Hossa lost a game in the following position because he didn't take care
>enough of his king:
>
>4r1k1/1Bpq1ppp/1bNp4/P3p3/3PPnb1/2P5/2Q2PPP/4RRK1 b
>
>Hossa had white against "blunite" and the last move was a5? Black won with Bf3!!
>How long does your program take to see that Bf3!! is winning (or does it find an
>even better move?)? Here is the analysis of Hossa:
>
>depth  value    time    nodes pv
>    1   -890    0.02       21 1... d7xc6 2.b7xc6
>    1   -441    0.04       99 1... f4xg2 2.g1xg2
>    2   -441    0.06      650 1... f4xg2 2.g1xg2
>!   3   -310    0.10     1769 1... f4xg2 2.g1xg2 g4h3 3.g2g1 h3xf1 4.e1xf1
>    4   -337    0.60    27560 1... e5xd4 2.c3xd4 f4xg2 3.g1xg2 g4h3 4.g2g1 h3xf1
>                              5.e1xf1
>    5   -333    0.80    37229 1... e5xd4 2.c3xd4 f4xg2 3.g1xg2 g4h3 4.g2h1 h3xf1
>                              5.e1xf1
>    6   -370    2.33   125529 1... e5xd4 2.c3xd4 f4xg2 3.e1c1 b6xd4 4.g1xg2
>    6   -326    8.53   483797 1... f4xg2 2.e1b1 g2f4 3.f1e1 f4e2 4.e1xe2 g4xe2
>                              5.c2xe2
>    7   -347   12.55   706240 1... f4xg2 2.e1b1 g2f4 3.f1e1 f4h3 4.g1f1 e5xd4
>                              5.a5xb6
>!   7   -120   48.09  2540272 1... g4f3 2.h4 f3xg2 3.a5xb6 c7xb6 4.c6xe5 d6xe5
>    8    -97    1:00  3240537 1... g4f3 2.b7c8 d7xc6 3.d5 f3xe4 4.e1xe4 f4xd5
>                              5.a5xb6 e8xc8
>!   9     80    7:17 24749284 1... g4f3 2.h3 f3xg2 3.a5xb6 g2xf1 4.e1xf1 c7xb6
>                              5.d4xe5 d7xb7
>!  10    171   20:04 66462256 1... g4f3 2.h3 f3xg2 3.e1e3 g2xf1 4.g1xf1 b6xa5
>                              5.f1g1 a5b6
>
>BTW: the blitz game ended with
>
> 24.      a5     Bf3
> 25.    dxe5     Qg4
> 26.    Ne7+    Rxe7
> 27.    axb6   Qxg2#
>
>
>
>Greetings,
>Steffen.


I get this:

(on my PII/300 notebook)

                7     1.72  -3.70   1. ... Nxg2 2. Kxg2 exd4 3. axb6 cxb6
                                    4. Kg1 Qxb7 5. Nxd4
                7     2.62  -3.55   1. ... exd4 2. cxd4 Nxg2 3. Kxg2 Bh3+
                                    4. Kh1 Bxf1 5. Rxf1 Qh3
                7     3.71     ++   1. ... Bf3!!
                7     5.38  -1.19   1. ... Bf3 2. axb6 Bxg2 3. Qd1 cxb6
                                    4. Nxe5 dxe5
                7->   5.53  -1.19   1. ... Bf3 2. axb6 Bxg2 3. Qd1 cxb6
                                    4. Nxe5 dxe5
                8    12.66  -0.97   1. ... Bf3 2. Bc8 Qxc6 3. d5 Nxd5 4.
                                    exd5 Bxd5 5. axb6 Rxc8
                8->  13.44  -0.97   1. ... Bf3 2. Bc8 Qxc6 3. d5 Nxd5 4.
                                    exd5 Bxd5 5. axb6 Rxc8
                9    25.86     ++   1. ... Bf3!!
                9     1:03   1.05   1. ... Bf3 2. h3 Bxg2 3. Re3 Bxf1 4.
                                    Kxf1 Bxa5 5. dxe5 Bb6
                9->   1:04   1.05   1. ... Bf3 2. h3 Bxg2 3. Re3 Bxf1 4.
                                    Kxf1 Bxa5 5. dxe5 Bb6
               10     1:47   1.40   1. ... Bf3 2. h3 Bxg2 3. Re3 Bxf1 4.
                                    Kxf1 Bxa5 5. Nxa5 Qb5+ 6. Kg1 Qxa5
               10->   1:49   1.40   1. ... Bf3 2. h3 Bxg2 3. Re3 Bxf1 4.
                                    Kxf1 Bxa5 5. Nxa5 Qb5+ 6. Kg1 Qxa5




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