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Subject: Re: Hard test position

Author: Uri Blass

Date: 01:38:15 05/04/05

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On May 04, 2005 at 03:44:25, Uri Blass wrote:

>On May 04, 2005 at 02:12:43, Randy Lovelace wrote:
>
>>On May 04, 2005 at 01:40:30, Jouni Uski wrote:
>>
>>>Can't black simple take 17. - hxg5 ? How does white continue?
>>>
>>>Jouni
>>>
>>>>
>>>>[Event "URS-ch06 Odessa qf1 "]
>>>>[Site "?"]
>>>>[Date "1929.01.01"]
>>>>[Round "?"]
>>>>[White "Bernstein, A"]
>>>>[Black "Sorokin, N"]
>>>>[Result "1-0"]
>>>>[ECO "C17"]
>>>>[Opening "French"]
>>>>[Variation "Winawer, advance, Bogolyubov variation"]
>>>>
>>>>1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.Bd2 Ne7 6.a3 Bxc3 7.bxc3 b6 8.Nf3 Ba6
>>>>9.Bxa6 Nxa6 10.O-O Qd7 11.a4 Nb8 12.Be3 Nf5 13.dxc5 Nxe3 14.fxe3 bxc5 15.
>>>>Ng5 O-O 16.Qh5 h6 17.Rf6 Nc6 18.Rxh6 gxh6 19.Qxh6 f6 20.exf6 Ne5 21.Rf1
>>>>Rab8 22.Rf4 Rb1+ 23.Kf2 Rxf6 24.Qxf6 1-0
>>
>>
>>17.  ...   hxg5
>>18 Raf1    Nc6
>>19 Rf3      g4
>>20 Rf4
>>
>>your engine should see it now.
>
>
>I assume you mean 19.R1f3 and 20.R3f4
>
>There are more possible lines
>
>For example 17...hxg5 18.Raf1 Qb7 and I do not see more than a draw for white
>after a line like 19.R1f3 g4 20.Qxg4 Qb1+

19.R1f3 seems to be not good because of 19...Qb1+( I analyzed both 19.R1f3 and
19.R6f3 that is better and simply forgot the right line).

In any case I do not see win for white after 19.R6f3 g4 20.Qxg4

Uri



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