Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Test position: Spassky-Tal,Riga 1958

Author: Chessfun

Date: 20:46:04 07/17/00

Go up one level in this thread


On July 17, 2000 at 19:23:13, Mogens Larsen wrote:

>On July 17, 2000 at 17:43:49, John Merlino wrote:
>
>>On July 17, 2000 at 11:01:29, José Antônio Fabiano Mendes wrote:
>>
>>>[D]2R4Q/3qkp2/3r2p1/3p3p/3P3P/5P2/5KP1/8 w
>>>"Spassky´s famous loss!He played 1.Qf8+ Kf6 2.Re8 but after
>>>2...Re6 3.Qh8+ Kf5 4.Qh6 Kf6 White has no more than a draw.
>>>Chekhover subsequently pointed out what had been missed by
>>>both players --- 1.g4! to use his pawns to take vital squares
>>>off the enemy king." Can the chess programs find this move? JAFM
>>>Source:"Spassky´s 100 Best Games" by Bernard Cafferty,second
>>>edition 1973,Batsford,section "Find the Winning Continuation!",
>>>page 246,position 6 ============================================
>>
>>Chessmaster says that Spassky failed with 2.Re8, and that 1.Qf8+ Kf6 is correct.
>>THEN it plays 2.g4, and the eval is 1.34 for White. It finds this in 10 seconds
>>on a P3-600, at a depth of 4/8. PV after 1:10, depth 5/9:
>>
>>1.Qf8+ Kf6 2.g4 hxg4 3.fxg4 Re6 4.Rc3 Re4 5.Rf3+ Ke6 6.g5 Qe7 7.Qc8+ Kd6 8.Rf6+
>>Re6 9.Qc5+ Kd7 10.Qxd5+ Ke8 11.Rxe6 fxe6
>
>Fritz 6 light agrees with the estimation of Chessmaster that Qf8+ is best.
>
>Best wishes...
>Mogens

Strange as Fritz 6 light scores it:
Prior to 1. g4 as:

Analysis by Fritz 6 Light:
1.Qf8+ Kf6 2.g4 hxg4 3.fxg4 Re6 4.Rc3 Re4 5.Rf3+ Ke6
  +-  (1.59)   Depth: 15/40   00:05:16  131376kN

Then after playing 1. g4 scores it.
1...hxg4 2.fxg4 Rf6+ 3.Kg3 Rb6 4.Qf8+ Kf6 5.Kf2 Re6
  +-  (1.72)   Depth: 12/36   00:00:49  10481kN

While after playing 1. Qf8+ scores it:
1...Kf6 2.g4 hxg4 3.fxg4 Re6 4.Rc3 Re4 5.Rf3+ Ke6 6.g5
  +-  (1.62)   Depth: 15/37   00:07:15  76983kN

(Bird, Scarb 17.07.2000)

Seems to me 1. g4 is better.

Thanks.










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.