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Subject: Re: Interesting Position from 1834 game in London

Author: Uri Blass

Date: 09:13:58 09/05/04

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On September 05, 2004 at 11:09:55, Anthony Cozzie wrote:

>On September 04, 2004 at 23:47:22, Michael Neish wrote:
>
>>On September 04, 2004 at 21:39:53, Cliff Sears wrote:
>>
>>>[d] 4rrk1/1b2bppp/2q5/p1P1p3/3pN3/5P2/PPB1Q1PP/2RR2K1 b - - 0 20
>>
>>>>Black to move and the move made by Black was "f5" "Black immediately begins
>>>the decisive advance. Note that he spends no time on prophylaxis against
>>>White's Queenside play, confident that his pawn-storm will sweep everything
>>>from its path"
>>>
>>>Black went on to win.
>>
>>For your information, Ruffian 1.0.1 likes Rc8 up to depth 11, then cat depth 12
>>changes to Qc7, to Rb8 and finally to Ba6, giving a score of +0.55 in favour of
>>Black.  If it changes again I'll let you know.
>>
>>BUT,
>>
>>1) Is f4 the best move, and White failed to find the best resistance?
>>
>>2) How did the actual game continue?
>>
>>A sample line with Ruffian goes as follows:
>>
>>1) ...   f5
>>2) Qc4+  Qd5
>>3) Bb3   Qxc4
>>4) Bxc4+ Kh8
>>5) Nd6   Bxd6
>>6) cxd6  Rd8
>>7) f4
>>
>>at which point it thinks White is doing pretty well, +1.09.
>>
>>Cheers,
>>
>>Mike.
>
>Obviously not Qd5.
>
>anthony

Yes

It is not an easy test position but movei finally at depth 16 (after almost 20
minutes on fast hardware) failed high

depth=16 -0.18 g8h8
Nodes: 624026840 NPS: 549682
Time: 00:18:55.25
depth=16 -0.02 g8h8 e4d6 e7d6 c2a4 c6c5 c4c5 d6c5 a4e8 c5b6 e8c6 d4d3 g1h1 b7a6
c6d5 b6d4 d5c4 a6c4 c1c4
Nodes: 850401788 NPS: 547713
Time: 00:25:52.64

Uri



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