Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: What is the winning line?

Author: Joachim Rang

Date: 08:24:02 10/14/02

Go up one level in this thread


On October 13, 2002 at 20:01:34, Aaron Gordon wrote:

>I haven't a clue if it's the winning line but uh.. axb5 in 17 minutes, 10
>seconds. here you go..
>
>Hardware: AthlonXP 1900+ @ 1.81GHz/158fsb(316DDR) w/ 512mb ram, 350mb hash under
>Win2k.
>
>
>rnbqk2r/1p3ppp/p7/1NpPp3/QPP1P1n1/P4N2/4KbPP/R1B2B1R b kq - 0 1
>
>Analysis by Deep Fritz 7:
>
>13...Nd7 14.Nd6+ Kf8 15.Ng5 Nb6 16.Ndxf7
>  =  (-0.03)   Depth: 5/32   00:00:00  292kN
>13...Nd7--
>  =  (0.25)   Depth: 6/31   00:00:00  355kN
>13...Nd7-- 14.Nd6+ Kf8 15.Nxc8 b5 16.Qc2
>  ²  (0.53)   Depth: 6/31   00:00:00  492kN
>13...axb5!
>  ²  (0.50)   Depth: 6/31   00:00:00  689kN
>13...axb5! 14.Qxa8 Na6 15.cxb5 Nc7 16.Qb8 0-0 17.b6
>  ²  (0.41)   Depth: 6/31   00:00:00  752kN
>13...axb5 14.Qxa8 Na6 15.cxb5 Nc7 16.Qb8 0-0 17.b6
>  ²  (0.41)   Depth: 7/17   00:00:01  1109kN
>13...axb5 14.Qxa8 Na6 15.cxb5 Nc7 16.Qb8 0-0 17.b6
>  ²  (0.41)   Depth: 8/36   00:00:02  1992kN
>13...axb5 14.Qxa8 Na6 15.cxb5 Nc7 16.Qb8 Nxb5 17.Nxe5 Nd6 18.bxc5 Bxc5
>  ²  (0.44)   Depth: 9/32   00:00:04  3832kN
>13...axb5--
>  ±  (0.72)   Depth: 10/36   00:00:09  7967kN
>13...axb5-- 14.Qxa8 Na6 15.cxb5 Nc7 16.Qa5 cxb4 17.Qxb4 Bb6 18.Bg5 Qd7 19.Ke1
>Bf2+
>  ±  (0.87)   Depth: 10/36   00:00:10  8830kN
>13...Nd7!
>  ±  (0.84)   Depth: 10/38   00:00:13  10908kN
>13...Nd7 14.Nd6+ Kf8 15.Nxc8 Ndf6 16.Qa5 Qxc8 17.h3 Bd4
>  ±  (0.78)   Depth: 11/36   00:00:32  27589kN
>13...Nd7 14.Nd6+ Kf8 15.Nxc8 Ndf6 16.Qa5 Qxc8 17.h3 Bd4
>  ±  (0.78)   Depth: 12/38   00:01:09  58551kN
>13...Nd7!
>  ²  (0.50)   Depth: 13/46   00:02:39  136026kN
>13...Nd7 14.Nd6+ Kf8 15.h3 Nb6 16.Nxb7 Bxb7 17.Qb3 Bd4 18.Nxd4 exd4 19.hxg4 Nd7
>20.Kf2 Kg8
>  ±  (0.72)   Depth: 14/44   00:05:24  278358kN
>13...Nd7 14.Nd6+ Kf8 15.h3 Nb6 16.Nxb7 Bxb7 17.Qb3 Bd4 18.Nxd4 exd4 19.hxg4 Nd7
>20.Kf2 Kg8
>  ±  (0.72)   Depth: 15/47   00:14:26  750345kN
>13...axb5!
>  ²  (0.69)   Depth: 15/48   00:17:10  887321kN
>13...axb5!
>  ²  (0.53)   Depth: 15/48   00:17:46  917159kN
>13...axb5! 14.Qxa8 Qc7 15.h3 Bd4 16.Nxd4 exd4 17.Qa7 d3+ 18.Kf3 Ne5+ 19.Kf2 bxc4
>20.Qxc5 Qxc5+ 21.bxc5 Nbd7 22.Bb2
>  ²  (0.50)   Depth: 15/48   00:18:13  940401kN
>13...axb5 14.Qxa8 Qc7 15.Rb1 Bd4 16.Nxd4 exd4 17.bxc5 Qe7 18.Rb2 0-0 19.h3 Na6
>20.Qa7
>  ²  (0.53)   Depth: 16/50   00:42:55  2214611kN


yep (Single) Fritz 7 finds it too, but at depth 17 gives still a positive score
in favour of white (but falling):

Multivariation-Analysis (two moves)

rnbqk2r/1p3ppp/p7/1NpPp3/QPP1P1n1/P4N2/4KbPP/R1B2B1R b kq - 0 1

Analysis by Fritz 7:

1. ² (0.34): 1...axb5 2.Qxa8 Qc7 3.h3 Bd4 4.Ra2 Nf6 5.Nxd4 cxd4 6.Kf3 bxc4 7.Qa5
Qxa5
2. ± (0.72): 1...Bd7 2.h3 Bd4 3.Nfxd4 cxd4 4.hxg4 Qb6 5.Rh5 0-0 6.Kd2 Ra7

regards Joachim



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.