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Subject: Re: Yusupov-Timman, Reykjavik 1988: Zappa needs 1/4 second :)

Author: martin fierz

Date: 04:58:20 10/22/03

Go up one level in this thread


On October 21, 2003 at 20:33:53, Anthony Cozzie wrote:

>On October 21, 2003 at 15:26:59, Darren Rushton wrote:
>
>>[D] 7k/6p1/r2B3p/4P3/4b3/3n3B/6PP/5RK1 w - - 0 1
>>
>>White could have won by force. 1.e6! Rd6 2.e7 Bc6 3.Rf8+ Kh7 4.Bf5+! g6 5.Rd8
>>Rf6 6.Bd7 Bd7 7.Rd7.
>>
>>Yusupov overlooked the intermediate check 4.Bf5+ and chose 1.g3? Kh7 2.Bg2 Bg2
>>3.Kg2 Kg6 4.Rf8, but Timman found a defence: 4...Nb2!, after which it turned out
>>to be impossible to convert [his] extra pawn into victory.
>>
>>Does your program find the correct continuation?
>>
>>Regards,
>>
>>Daz
>
>Zappa:
>
>1. e6 Rxd6 2. e7 Bc6 3. Rf8 Kh7 4. Rd8 Rf6 5. e8=Q Bxe8 6. Rxe8
> = (2.30)       Depth: 6/14     00:00:00.24     77784kN
>1. e6 Kh7 2. e7 Ra8 3. Bd7 Bg6 4. Rb1 Ra2 5. e8=Q Bxe8 6. Bxe8 Re2 7. Rd1
> = (3.65)       Depth: 13/29    00:00:30.11     18740317kN
>

hi anthony,

strange line at depth 6! if you play out the moves in the pv you have what looks
like a dead equal position to me, yet zappa evaluates it as +2.30. what's going
on here?

cheers
  martin



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