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Subject: Re: One mate to solve.

Author: Tim Foden

Date: 02:05:50 08/25/01

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On August 24, 2001 at 06:26:22, leonid wrote:

>[D]3kn3/3bn3/3bq3/3rqBRK/3rqNNB/3qq3/3qp3/QQRQQQQQ w - -
>
>Do you know that Chinese and English have one striking resemblance? They both
>like using "up" and "down". Mate position  that you see here is in fact one
>character that say "up".
>

Green Light Chess 2.15-pr1, 920MHz Duron, 96MB hash,
says Qb6+ is Mate in 10 after 35 seconds.

Cheers, Tim.

~~~~~~~~~~~~~

Analysis:

>anal
 Game stage: Opening
 Current eval: 7.50
 Ply  Time   Score   Nodes  Principal Variation
  2   0.07 +16.513    5239  Nxe6+ Qxe6 Qxe3 Qd2xe3 Nxe3 exf1=Q Qxe4
  3   0.11 +16.504   13346  Nxe6+ Qxe6 Qa8+ Nc8 Bxe6 exf1=Q Qexe3
  3   0.19 +16.504   29680  Nxe6+ Qxe6 Qa8+ Nc8 Bxe6 exf1=Q Qexe3
  4   0.27 +16.524   52686  Nxe6+ Qxe6 Qa8+ Bc8 Qb6+ Nc7 Bxe6 exd1=Q Rxd1
  4   0.35 +16.533   86985  Qa8+ Bc8 Qb6+ Bc7 Nxe6+ Qxe6 {ht}
  4   0.53 +16.533  152385  Qa8+ Bc8 Qb6+ Bc7 Nxe6+ Qxe6 {ht}
  5   8.20      -- 2742426  Qa8+    (a=16.03 b=17.03 e=16.03)
  5   9.02 +15.073 3081255  Qa8+ Bc8 Nxe6+ Qxe6 Qb6+ Bc7 Qxe6 Qxe6 Qxe3 Qexe3
  5  11.01 +15.073 4006609  Qa8+ Bc8 Nxe6+ Qxe6 Qb6+ Bc7 Qxe6 Qxe6 Qxe3 Qexe3
  6  11.67      ++ 4283483  Qa8+    (a=14.57 b=15.57 e=15.57)
  6  26.53 +23.057  10830k  Qa8+ Bb8 Nxe6+ Bxe6 Qb6+ Kd7 Nxe5+ Qxe5 Qbb7+ Bc7
                              Bxd3 exd1=Q+ Rxd1
  6  31.47 +26.806  12928k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxf6+ Qe7
                              Nxe3 exf1=Q Nxd3 Qxf6 Nxf1
  6  32.31 +26.806  13398k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxf6+ Qe7
                              Nxe3 exf1=Q Nxd3 Qxf6 Nxf1
  7  32.85      ++  13598k  Qb6+    (a=26.31 b=27.31 e=27.31)
  7  35.00  Mate10  14838k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxc8+ Ke7
                              Rxe8+ Bxe8+ Qxe8+ Kxe8 Nxf6+ Kf7 Qg8+ Ke7 Ng6#
                              {ht}
  7  39.01  Mate10  17653k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxc8+ Ke7
                              Rxe8+ Bxe8+ Qxe8+ Kxe8 Nxf6+ Kf7 Qg8+ Ke7 Ng6#
                              {ht}
  8  46.67  Mate10  23280k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxc8+ Ke7
                              Rxe8+ Bxe8+ Qxe8+ Kxe8 Nxf6+ Kf7 Qg8+ Ke7 Ng6#
  8   1:28  Mate10  53487k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxc8+ Ke7
                              Rxe8+ Bxe8+ Qxe8+ Kxe8 Nxf6+ Kf7 Qg8+ Ke7 Ng6#
  9   2:20  Mate10  93932k  Qb6+ Bc7 Qa8+ Nc8 Rg8+ Q5f6 Bxf6+ Qxf6 Qxc8+ Ke7
                              Rxe8+ Bxe8+ Qxe8+ Kxe8 Nxf6+ Kf7 Qg8+ Ke7 Ng6#
  9   3:10   1/73           Nxe5   >exit
 local:  t=3:16  nps=693291.0  n=135928025 (16.9% / 83.1%)  fh=95.4%
 total:  t=3:16  nps=693291.0  n=135928025  draws=8467
 trans:  probes=14146938  hits=1435339 (10.15%)  draft=780423 (5.52%)
 tcuts:  exact=181 (0.00%)  upper=433673 (3.07%)  lower=214317 (1.51%)
 tstor:  exact=718 (0.01%)  upper=7089179 (70.89%)  lower=2910813 (29.11%)
 ext:  check=15990112  recap=468680  ppush=0  1rep=452794  thrt=0
 q-moves:  gen=41852347  tested=9637001  made/un=4546996  max-dep=9
 max eval diff:  part-1=2.575  part-2=1.690



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