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Subject: Re: If you like to solve mate with slight challenge...

Author: Tim Foden

Date: 12:37:58 03/03/01

Go up one level in this thread


On March 03, 2001 at 08:41:46, leonid wrote:

>Hi!
>
>If you hate solving too easy mate, then this is for you. Actual position contain
>slight challenge but still is completely reachable.
>
>[D]Q3q2Q/3nbn1B/1QqrkrbQ/3nqn1q/QNq1Q1qN/2B1q2Q/3Q3Q/1K2RR2 w - -
>
>Please, indicate your result.
>
>Don't forget name your program and hardware.
>

Green Light Chess 2.13, Duron 920MHz, 48Mb hash, finds a mate in 11 after 1 min
43 seconds, but upgrades this to a mate in 10 after 8 mins 10 seconds.

Cheers, Tim.

Analysis below:

>hash 48
 Hash table size set to: 48.0MB
>anal
 Game stage: Opening
 Current eval: 13.03
 Ply  Time  Score   Nodes  Principal Variation
  1   0.04  19.48    9014  Qh3xe3 >
  2   0.19     --   40744  Qh3xe3  (a=18.98 b=19.98 e=18.98)
  2   0.31  12.96   71244  Qh3xe3 Qgxe4+ Qxe4 Nxc3+ Qxc3 Qexe4+ Qhc2
  2   0.60  16.54  155378  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Rxe3
  2   0.67  16.54  176932  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Rxe3
  3   1.48  16.52  445475  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Qc8+ Qed7 Qhxg4
  3   1.90  16.52  604385  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Qc8+ Qed7 Qhxg4
  4   4.02  16.80 1485148  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Qxf6+ Bxf6 Qxe8+ Qxe8
                             Qxe8+ Ne7 Rxf6+ Kxf6 Nxd5+ Nxd5
  4   7.16  16.80 2714358  Qhxe5+ Ndxe5 Qdxd5+ Q4xd5 Qxf6+ Bxf6 Qxe8+ Qxe8
                             Qxe8+ Ne7 Rxf6+ Kxf6 Nxd5+ Nxd5
  5   8.38     ++ 3144853  Qhxe5+  (a=16.30 b=17.30 e=17.30)
  5  28.52  26.74  12823k  Qhxe5+ Nfxe5 Bg8+ Qf7 Bxf7+ Rxf7 Qhxe5+ Nxe5 Qxe5+
                             Qxe5 Rxe5+ Kd7 Qba7+ Nc7
  5  33.61  26.74  15667k  Qhxe5+ Nfxe5 Bg8+ Qf7 Bxf7+ Rxf7 Qhxe5+ Nxe5 Qxe5+
                             Qxe5 Rxe5+ Kd7 Qba7+ Nc7
  6  33.70     ++  15698k  Qhxe5+  (a=26.24 b=27.24 e=27.24)
  6   1:43 320.79  60997k  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qdxd5+ Q4xd5 Qxd5+
                             Rxd5 Qaxc6+ Nxc6 Qxc6+ Rd6 Q3xe3+ Nxe3 Rxf6+ Bxf6
                             Q6xf6+ Nxf6 Qxf6# <ht>
  6   2:25 320.79  91828k  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qdxd5+ Q4xd5 Qxd5+
                             Rxd5 Qaxc6+ Nxc6 Qxc6+ Rd6 Q3xe3+ Nxe3 Rxf6+ Bxf6
                             Q6xf6+ Nxf6 Qxf6# <ht>
  7   8:10 320.81 367688k  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qxe5+ Qxe5 Rxe5+
                             Nxe5 Qc8+ Rd7 Qaxc6+ Nxc6 Qxd5+ Qxd5 Q6xf6+ Bxf6
                             Qxf6# <ht>
  7  21:48 320.81   1007m  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qxe5+ Qxe5 Rxe5+
                             Nxe5 Qc8+ Rd7 Qaxc6+ Nxc6 Qxd5+ Qxd5 Q6xf6+ Bxf6
                             Qxf6# <ht>
  8 1:06:21 320.81   3441m  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qxe5+ Qxe5 Rxe5+
                             Nxe5 Qc8+ Rd7 Qaxc6+ Nxc6 Qxd5+ Qxd5 Q8xf6+ Bxf6
                             Qxf6# <ht>
  8 2:59:09 320.81   9384m  Qhxe5+ Nfxe5 Bg8+ Qxg8 Qaxg8+ Bf7 Qxe5+ Qxe5 Rxe5+
                             Nxe5 Qc8+ Rd7 Qaxc6+ Nxc6 Qxd5+ Qxd5 Q8xf6+ Bxf6
                             Qxf6# <ht>
  9 3:08:21   0/112         Qhxe5+ >exit
 local:  t=3:08:30  nps=877293.2  n=9923005308  (f=1666995293  q=8256010015)
 total:  t=3:08:30  nps=877293.2  n=9923005308  draws=556631
 trans:  probes=760349322  hits=48165193 (6.33%)  draft=39916299 (5.25%)
 tcuts:  exact=269 (0.00%)  upper=29606530 (3.89%)  lower=9691285 (1.27%)
 tstor:  exact=988 (0.00%)  upper=466118778 (76.31%)  lower=144735166 (23.69%)
 ext:  check=1379702197  recap=31909277  ppush=0  1rep=25714662  thrt=0
 q-moves:  gen=74797147  tested=12087705  made/un=5482727  max-dep=9
 max eval diff:  part-1=2.00  part-2=1.60





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