Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Can your engine find Nd5? Deep Shredder cannot, but..........

Author: Slater Wold

Date: 23:35:32 09/07/01

Go up one level in this thread


On September 07, 2001 at 23:28:10, Aaron Gordon wrote:

>On September 07, 2001 at 23:01:19, Slater Wold wrote:
>
>>On September 07, 2001 at 16:12:50, Aaron Gordon wrote:
>>
>>>While analyzing a game between Shirov and Polgar I came across this position..
>>>
>>>[D]rnb2bk1/1pqnr2p/p2pp1P1/6PB/4P3/2N1B3/PPP4P/R2Q1RK1 w - - 0 1
>>>
>>>
>>>Fritz and most others keep wanting to do gxh7 but the actual move that was
>>>played was Nd5 and shows a +3 pawn lead after a couple minutes of searching.
>>>
>>>Let me know what you guys can come up with...
>>
>>Deep Shredder on my 2x1.4Ghz:
>>
>>Shredder 5.32 - W,S
>>rnb2bk1/1pqnr2p/p2pp1P1/6PB/4P3/2N1B3/PPP4P/R2Q1RK1 w - - 0 1
>>
>>Analysis by Shredder 5.32:
>>
>>1.Rxf8+ Nxf8 2.gxh7+ Nxh7
>>  -+  (-1.80)   Depth: 1/2   00:00:00
>>1.Rxf8+ Nxf8 2.Qxd6 Qxd6 3.gxh7+ Rxh7
>>  -+  (-1.80)   Depth: 1/2   00:00:00
>>1.gxh7+ Kxh7 2.g6+ Kh8
>>  =  (0.09)   Depth: 1/2   00:00:00
>>1.gxh7+ Kxh7 2.g6+ Kh8
>>  =  (0.09)   Depth: 1/2   00:00:00
>>1.gxh7+ Kxh7 2.g6+ Kh8
>>  =  (0.09)   Depth: 2/4   00:00:00
>>1.gxh7+ Kxh7 2.g6+ Kh8 3.Qd3
>>  =  (0.09)   Depth: 3/6   00:00:00
>>1.gxh7+ Rxh7 2.g6 Rg7 3.Qd4 Ne5
>>  =  (0.04)   Depth: 4/8   00:00:00
>>1.gxh7+ Rxh7 2.Qf3 Kh8 3.Bg6 Rh4 4.Qf7
>>  =  (0.16)   Depth: 5/10   00:00:00
>>1.gxh7+ Rxh7 2.Qf3 Qc4 3.Bg6 Bg7 4.Qf7+ Kh8 5.Bxh7 Kxh7
>>  ²  (0.40)   Depth: 6/12   00:00:00  93kN
>>1.gxh7+ Rxh7 2.Qf3 Qc4 3.Bg6 Rh8 4.Rad1
>>  ²  (0.65)   Depth: 7/14   00:00:00  171kN
>>1.gxh7+ Kh8 2.Bf7 Nc6 3.Qd4+ Nxd4 4.Bxd4+ Kxh7 5.Bg6+ Kxg6 6.Rf6+ Kxg5 7.Be3+
>>Kxf6
>>  ²  (0.65)   Depth: 7/14   00:00:00  398kN
>>1.gxh7+ Kh8 2.g6 Bg7 3.Qd3 Ne5 4.Qe2 Nc4 5.Bg5 Bxc3 6.Bxe7 Bxb2
>>  ²  (0.61)   Depth: 8/16   00:00:01  795kN
>>1.gxh7+ Kh8 2.g6 Bg7 3.Kh1 Bxc3 4.bxc3 Nc6 5.Bg5 Rg7
>>  ²  (0.56)   Depth: 9/18   00:00:03  1583kN
>>1.gxh7+ Kh8 2.g6 Bg7 3.Kh1 Nc6 4.Qd2 Qa5 5.Be2 Qe5 6.Rad1
>>  ²  (0.52)   Depth: 10/20   00:00:10  4981kN
>>1.gxh7+ Kh8 2.g6 Bg7 3.Kh1 Nc6 4.Qd2 Nde5 5.Qe2 b6 6.Rad1 Bb7
>>  ²  (0.47)   Depth: 11/22   00:00:27  13113kN
>>1.gxh7+ Kh8 2.g6 Bg7 3.Kh1 Nc6 4.Qd2 Qa5 5.Bg5 Bxc3 6.bxc3 Rg7 7.Rab1 Qxa2
>>8.Qxd6 Qxc2 9.Qxe6 Qxc3
>>  ²  (0.50)   Depth: 12/24   00:01:14  35701kN
>>1.gxh7+ Kh8 2.g6 Nc6 3.Kh1 b5 4.Bf4 Rg7 5.Qd2 e5 6.Nd5 Ndb8
>>  ²  (0.37)   Depth: 13/26   00:05:45  165608kN
>>1.gxh7+ Kh8 2.Nd5 exd5 3.Qxd5 Rxh7 4.Bg6 Rg7 5.Bd4 Qxc2 6.Rf7 Ne5 7.Bxe5 dxe5
>>8.Rxf8+ Rg8 9.Rxg8#
>>  ²  (0.62)   Depth: 14/28   00:14:34  416858kN
>>1.gxh7+ Kh8 2.Nd5 exd5 3.Qxd5 Rxh7 4.Bg6 Rg7 5.Bd4 Qxc2 6.Rf7 Ne5 7.Rxf8+ Rg8
>>8.Qxg8#
>>  ±  (1.12)   Depth: 14/28   00:18:07  514699kN
>>1.gxh7+ Kh8 2.Nd5 Qd8 3.Rxf8+ Qxf8 4.Nc7 Nf6 5.Nxa8 Nxh5 6.Qxh5 Rxh7 7.Qg6 Bd7
>>8.Rd1
>>  +-  (3.11)   Depth: 14/28   00:51:04  1513382kN
>>1.gxh7+ Kh8 2.Nd5 Qd8 3.Nf4 Ne5 4.Bd4 Rg7 5.Bxe5 dxe5 6.Qxd8 Kxh7 7.Qxc8 Rxg5+
>>8.Kh1
>>  +-  (3.36)   Depth: 15/30   01:39:56  2986035kN
>>1.gxh7+ Kh8 2.Nd5 Qd8 3.Nf4 Ne5 4.Bd4 Rg7 5.Bxe5 dxe5 6.Qxd8 Kxh7 7.Qxc8 Rxg5+
>>8.Kh1 Nc6
>>  +-  (3.86)   Depth: 15/30   02:01:08  3614587kN
>>1.gxh7+ Kh8 2.Nd5 exd5 3.Qxd5 Rxh7 4.Bg6 Qd8 5.Bxh7 Bg7 6.Qf7 Kxh7 7.Rf5 Kh8
>>8.g6 Nf6 9.Bh6 Qg8 10.Bxg7+ Qxg7 11.Rxf6 Qxf6
>>  +-  (4.29)   Depth: 15/30   02:58:55  5330482kN
>>
>>(W,  07.08.2001)
>>
>>
>>gxh7+ doesn't seem to be _too_ wrong.  :)
>>
>>
>>Slate
>
>Sheez, thats a pretty deep search :) Indeed, looks like gxh7+ is also very good

I fell asleep.  :)


Slate



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.