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Subject: Re: If you would like to solve a mate... or two ...

Author: Tim Foden

Date: 15:08:25 04/10/01

Go up one level in this thread


On April 10, 2001 at 08:37:48, Paul wrote:
>Here's a nice (normal ;)) mate in 10 in return for you from the German CSS forum
>...
>
>[D]2qrr1n1/3b1kp1/2pBpn1p/1p2PP2/p2P4/1BP5/P3Q1PP/4RRK1 w - -
>
>Ciao,
>Paul

Green Light Chess 2.14-pr7, 880MHz Duron, 48MB hash, says after 21 seconds that
Qh5+ is a mate in 14.  It then agrees that this is a mate in 10 after another
second :)

Analysis:

>anal
 Game stage: Middle game
 Current eval: -0.10
 Ply  Time   Score   Nodes  Principal Variation
  3   0.02      --    9118  fxe6+   (a=0.39 b=1.39 e=0.39)
  3   0.03  -0.281   13081  fxe6+ Bxe6 exf6 axb3 fxg7+ Kxg7 Be5+ Kh7 axb3 Bxb3
  3   0.06      ++   13470  exf6    (a=-321.00 b=0.39 e=0.39)
  3   0.06  -0.186   13753  exf6 axb3 fxg7 Kxg7 Qg4+ Kh7
  3   0.06  -0.186   17629  exf6 axb3 fxg7 Kxg7 Qg4+ Kh7
  4   0.07      ++   18053  exf6    (a=-0.69 b=0.31 e=0.31)
  4   0.11   1.311   22222  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6
  4   0.14   1.311   35844  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6
  5   0.17   1.346   48631  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6 Be5
  5   0.25   1.346   91366  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6 Be5
  6   0.33   1.154  132028  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Rxe6 Qxe6+ Qxe6 Rxe6
                              Kxe6
  6   0.63   1.154  310877  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Rxe6 Qxe6+ Qxe6 Rxe6
                              Kxe6
  7   0.90   1.154  447510  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Rxe6 Qxe6+ Qxe6 Rxe6
                              Kxe6
  7   2.16   1.154 1178318  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Rxe6 Qxe6+ Qxe6 Rxe6
                              Kxe6
  8   2.87   1.001 1537485  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6 Be5 Qd5 Qf2 Kg6
  8   9.42   1.001 5284346  exf6 Nxf6 Bxe6+ Bxe6 fxe6+ Qxe6 Be5 Qd5 Qf2 Kg6
  9  11.59   1.421 6448783  exf6 Nxf6 fxe6+ Bxe6 Qh5+ Kg8 Rxf6 Bxb3 Rxe8+ Rxe8
                              axb3 gxf6 Qg6+ Kh8 Qxh6+ Kg8 bxa4
  9  20.99      ++  12019k  Qh5+    (a=0.50 b=1.50 e=1.50)
  9  21.30 320.973  12268k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Bd1 Bxe6 Rxf4+ Bg4 Rgxg4+ Qxg4 Rxg4+
                              Kh5 Rxg7+ Kh4 g3+ Kh3 Bg4# <ht>
  9  22.03 320.973  12798k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Bd1 Bxe6 Rxf4+ Bg4 Rgxg4+ Qxg4 Rxg4+
                              Kh5 Rxg7+ Kh4 g3+ Kh3 Bg4# <ht>
 10  22.87 320.981  13514k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 10  30.78 320.981  20031k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 11  32.52 320.981  21547k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 11  52.32 320.981  38556k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 12  56.29 320.981  42100k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 12   1:52 320.981  90766k  Qh5+ Nxh5 fxe6+ Kg6 Bc2+ Kg5 Rf5+ Kg6 Rf6+ Kg5 Rg6+
                              Kh4 Re4+ Nf4 Rxf4+ Kh5 g3 Bxe6 Rh4# <ht>
 13   1:52   0/44           Qh5+   >exit
 local:  t=1:55  nps=808885.3  n=93641414  (f=21967884  q=71673530)
 total:  t=8:33  nps=765447.4  n=393315946  draws=34901
 trans:  probes=15573496  hits=3195682 (20.52%)  draft=1473169 (9.46%)
 tcuts:  exact=126 (0.00%)  upper=839872 (5.39%)  lower=564982 (3.63%)
 tstor:  exact=640 (0.01%)  upper=5141207 (68.16%)  lower=2401183 (31.83%)
 ext:  check=9987616  recap=118775  ppush=683579  1rep=444653  thrt=0
 q-moves:  gen=5430809  tested=2297579  made/un=622742  max-dep=11
 max eval diff:  part-1=3.079  part-2=3.055
>

Cheers, Tim.



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