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Subject: Re: Gambit Tiger 2.0 solves it in 1.4s

Author: Jonas Cohonas

Date: 12:55:12 04/22/01

Go up one level in this thread


On April 22, 2001 at 15:22:03, Christophe Theron wrote:

>On April 22, 2001 at 09:57:10, leonid wrote:
>
>>Hi!
>>
>>If you want to solve one mate and say your result, then this is the position:
>>
>>[D]2R2bNn/Rp1n1k1b/1q1ppB1p/1Np1p1p1/2P1P2P/3P2PB/4Q2K/8 w - -
>>
>>If you program says nodes/per/second, please indicate it for this position.
>>
>>I recently was impressed by very high NPS that Rebel 10 demonstrated when I
>>tried to solve few mate positions on it. Search was done by brute force. On
>>Celeron 600Mhz (hash off) NPS was around 500000 nps. Also I installed recently
>>NPS counter in my mate solver and this is from where my curiosity come. To my
>>surprise, my NPS is usually well below of Rebel's numbers.
>>
>>If you have, beside your own program, any professional chess program and you can
>>indicate also its NPS, please do this.
>>
>>Thanks for your numbers,
>>Leonid.
>
>
>
>On a K6-2 450MHz, 6Mb hash tables:
>
>00:00:01.4	 Mate in 6	7	161394	Bxe6+ Kxe6 Qg4+ Kf7 Qxd7+ Kg6 g4 h5 Rxf8 hxg4
>Qf5+ Kh5 Qxh7#
>
>Tiger says mate in 6 after the key move (Bxe6+) has been played, so it is
>actually a mate in 7. Please do not complain again for this. :)
>
>
>
>    Christophe

New position
2R2bNn/Rp1n1k1b/1q1ppB1p/1Np1p1p1/2P1P2P/3P2PB/4Q2K/8 w - - 0 1

Deep Fritz needs 4 seconds with a nodecount of 1231 kN/s  1.3ghz T-bird 512 ram

Analysis by Deep Fritz:

1.Rxf8+ Nxf8
  +-  (7.66)   Depth: 1/8   00:00:00
1.Bxh8!
  +-  (8.03)   Depth: 1/8   00:00:00
1.Bxh8! Bxg8
  +-  (9.03)   Depth: 1/8   00:00:00
1.Qh5+!
  +-  (9.19)   Depth: 1/11   00:00:00
1.Qg4!
  +-  (9.22)   Depth: 1/16   00:00:00
1.Qg4!
  +-  (9.53)   Depth: 2/23   00:00:00  4kN
1.Qg4! d5 2.hxg5
  +-  (9.75)   Depth: 2/24   00:00:00  7kN
1.Qf1!
  +-  (9.78)   Depth: 2/24   00:00:00  10kN
1.Qf2!
  +-  (9.81)   Depth: 2/27   00:00:00  15kN
1.Qf2! Kxg8
  +-  (9.88)   Depth: 2/27   00:00:00  18kN
1.Qf3!
  +-  (9.91)   Depth: 2/27   00:00:00  19kN
1.Qf3! Kxg8
  +-  (9.97)   Depth: 2/27   00:00:00  21kN
1.Bd8!
  +-  (10.09)   Depth: 2/27   00:00:00  21kN
1.Bd8! Qxa7 2.Nxa7
  +-  (10.53)   Depth: 2/27   00:00:00  24kN
1.Bd8 Qxa7 2.Nxa7 Bxg8
  +-  (10.53)   Depth: 3/16   00:00:00  25kN
1.Bd8 Qxa7 2.Nxa7 Bxg8 3.hxg5
  +-  (10.53)   Depth: 4/23   00:00:00  38kN
1.hxg5!
  +-  (10.56)   Depth: 4/27   00:00:00  94kN
1.hxg5! Nxf6 2.Nxf6 Bg6 3.gxh6
  +-  (10.69)   Depth: 4/27   00:00:00  102kN
1.hxg5!
  +-  (11.00)   Depth: 5/24   00:00:00  119kN
1.Rc7!
  +-  (11.03)   Depth: 5/30   00:00:00  182kN
1.Rc7! Qxc7 2.Nxc7 Nxf6 3.Bxe6+ Kg6 4.Nxf6
  +-  (11.34)   Depth: 5/30   00:00:00  235kN
1.Bxe6+!
  +-  (11.41)   Depth: 5/30   00:00:00  291kN
1.Bxe6+! Kxe6 2.Qg4+ Kf7 3.Qxd7+ Kg6 4.Qf5+ Kh5 5.Qxh7
  +-  (13.25)   Depth: 5/30   00:00:00  296kN
1.Bxe6+!
  +-  (13.56)   Depth: 6/24   00:00:00  301kN
1.Bxe6+! Kxe6 2.Qg4+ Kf7 3.Qxd7+ Kg6 4.Qe8+ Nf7 5.h5+ Kxh5
  +-  (15.16)   Depth: 6/27   00:00:00  325kN
1.Qh5+!
  +-  (15.19)   Depth: 6/30   00:00:00  398kN
1.Qh5+!
  +-  (15.50)   Depth: 7/27   00:00:00  627kN
1.Qh5+! Ng6 2.Rxb7 Qxb5 3.cxb5 Bxg8 4.Rxd7+ Be7 5.Bxe7
  +-  (19.06)   Depth: 7/34   00:00:01  1212kN
1.Bxe6+!
  +-  (19.09)   Depth: 7/34   00:00:01  1296kN
1.Bxe6+! Kxe6 2.Qg4+ Kf7 3.Qxd7+ Kg6 4.g4 Bxg8 5.Bxh8 h5
  +-  (#7)   Depth: 7/34   00:00:04  6065kN

(, MyTown 23.04.2001)




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