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Subject: Re: a difficult position ?

Author: Dieter Buerssner

Date: 06:52:40 08/09/00

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On August 08, 2000 at 11:55:12, Philippe Signoret wrote:

>This is a position from a game I played against Fritz 5.32 in rated mode 2150
>elo
>The move rook h4 is winning for black.But it takes a long time for programs to
>find it:
>30 min for Schredder4, and about 2 hours for Fritz or CM6000
>
>k1bq2rr/p4p2/PpnBp3/3pP1p1/2pP1nB1/Q1P2N2/1RP2P1P/1R4K1 b - -
>
>Please try this position with other programs.Yace 0.23 pre 3, 30M hash, AMD K6-2 at 475: 92 s
The 'H' appendend to some moves, means that this move was taken out of the
hash table at display time. So at search time, there could have been a different
line in the hash.

   5865740 46.96     44  9t : Nf4e2+ Kg1f1 Ne2xc3 Qa3xc3 f7f5 Bg4xf5 e6xf5
                              Rb2b5 Bc8xa6 Rb5xd5 Nc6e7 Bd6xe7 Qd8xd5 Be7xg5
                              [80]
   5926420 47.43     44  9. : Nf4e2+ Kg1f1 Ne2xc3 Qa3xc3 f7f5 Bg4xf5 e6xf5
                              Rb2b5 Bc8xa6 Rb5xd5 Nc6e7 Bd6xe7 Qd8xd5 Be7xg5
                              [80]
   9328393 72.96     44 10t : Nf4e2+ Kg1f1 Ne2xc3 Qa3xc3 f7f5 Bg4xf5 e6xf5
                              Rb2b5 Bc8xa6 Rb5xd5 Nc6e7 Bd6xe7 Qd8xd5 Be7xg5
                              [80]
  11868769 91.59     45 10t+: Rh8h4 Nf3xh4 g5xh4 f2f3 Rg8xg4+ f3xg4 Qd8g5
                              Rb2xb6 a7xb6 Qa3a4 Qg5xg4+ Kg1f1 Qg4g2+H Kf1e1H
                              Qg2g1+H Ke1d2H Qg1xh2+H Kd2d1H [240]
  12473115 96.09     84 10++: Rh8h4 Nf3xh4 g5xh4 f2f3 Rg8xg4+ f3xg4 Qd8g5
                              Rb2xb6 a7xb6 Qa3a4 Qg5xg4+ Kg1f1 Qg4g2+ Kf1e1
                              Qg2g1+ Ke1d2 Qg1xh2+ Kd2d1 [240]
  15789869 120.2    177 10t : Rh8h4 Nf3xh4 g5xh4 h2h3 Nf4xh3+ Kg1g2 Qd8g5 f2f3
                              Qg5f4 Rb1f1 Qf4g3+ Kg2h1 Nh3f2+ Rf1xf2 Qg3xf2
                              [90]
  15875434 120.8    177 10. : Rh8h4 Nf3xh4 g5xh4 h2h3 Nf4xh3+ Kg1g2 Qd8g5 f2f3
                              Qg5f4 Rb1f1 Qf4g3+ Kg2h1 Nh3f2+ Rf1xf2 Qg3xf2
                              [90]
  19774665 151.4    217 11++: Rh8h4 Nf3xh4 g5xh4 h2h3 Nf4xh3+ Kg1g2 Nh3f4+
                              Kg2f3 Qd8g5 Rb1g1 Qg5g6 Rb2xb6 a7xb6 Bg4h5
                              Qg6xh5+ Kf3xf4 [320]
  22107972 167.5    219 11t : Rh8h4 Nf3xh4 g5xh4 Kg1h1 Rg8xg4 Qa3a4 Bc8d7
                              Qa4a1H Rg4g2H Rb1f1H Qd8g5H Rf1g1H f7f5H <HT>
                              [140]
  23183958 174.5    219 11. : Rh8h4 Nf3xh4 g5xh4 Kg1h1 Rg8xg4 Qa3a4 Bc8d7
                              Qa4a1 Rg4g2 Rb1f1 Qd8g5 Rf1g1 f7f5 <HT> [140]
  35004898 255.5    225 12t : Rh8h4 Nf3xh4 g5xh4 Kg1h1 Rg8xg4 Qa3a4 Bc8d7
                              Qa4a1 Rg4g2 Rb1f1 Qd8g5 Rf1g1 Rg2xg1+ Qa1xg1
                              Qg5xg1+ Kh1xg1 Nf4e2+ Kg1g2 Ne2xc3 [240]
  37512443 272.1    225 12. : Rh8h4 Nf3xh4 g5xh4 Kg1h1 Rg8xg4 Qa3a4 Bc8d7
                              Qa4a1 Rg4g2 Rb1f1 Qd8g5 Rf1g1 Rg2xg1+ Qa1xg1
                              Qg5xg1+ Kh1xg1 Nf4e2+ Kg1g2 Ne2xc3 [240]





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