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Subject: Re: Your win for black is a win for white :-)

Author: Dann Corbit

Date: 00:51:55 01/17/03

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On January 17, 2003 at 03:23:20, Harald Faber wrote:

>On January 17, 2003 at 03:21:03, Dann Corbit wrote:
>
>>On January 17, 2003 at 03:16:06, Harald Faber wrote:
>>
>>>On January 17, 2003 at 02:33:37, Dann Corbit wrote:
>>>
>>>>>  r1r2b1k/1bq2p1p/p1npp1p1/2nB2P1/4P1NQ/2p1B2R/PPP2P1P/2KR4 b - -
>>>>>  Depth   Time  Score    Best line
>>>>>  13/38  11:59   3.37    ... h5 Nf6 Bg7 bxc3 Qa5 Qxh5+ gxh5 Rxh5+ Bh6 Rxh6+
>>>>>                         Kg7 Rh7+ Kf8 g6 Ne5 Bxc5 dxc5 g7+ Ke7 Bxb7 Qa3+ Kb1
>>>>>                         Kxf6 Bxa8 Rxa8
>>>>>  13...  14:52   5/37    f5
>>>>
>>>>cxb2 is definitely fool's gold.  But it looks like h5 wins (also according to
>>>>Chessmaster 9000):
>>>>
>>>>Time	Depth	Score	Positions	Moves
>>>>9:26	2/11	-3.69	68760452	1...h5 2.Nf6 Bg7 3.bxc3 exd5 4.Qxh5+
>>>>					gxh5 5.Rxh5+ Bh6 6.Rxh6+ Kg7 7.Rh7+
>>>>					Kf8 8.Rh8+ Ke7 9.Nxd5+ Kd7 10.Nxc7
>>>>					Kxc7 11.Rh7
>>>
>>>
>>>What about 1...h5 2.Nf6 Bg7 3.Qg4!?
>>>E.g.: 3...Bxf6 4.Rxh5!! Kg8 (4...Kg7 is #7; 4...gxh5 5.Qxh5 also #7) 5.gxf6
>>>cxb2+ 6.Kb1 +-. It is hardly possible to find a defense against 6.Rh8+ Kxh8
>>>7.Qh4+ and soon mate. 5...Qb6 does not save: 6.b3 and still the threat on h8/g7
>>>decides.
>>>The only way seems to be 3...Qb6, e.g. 4.bxc3 Bg7 5.Qxh5+ gxh5 6.Rxh5+ Bh6
>>>7.Rxh6+ Kg7 8.Rh7+ Kf8 9.Bxc5 Qxc5 10.Nd7+ and now draw by 10...Kg8 11.Nf6+ or
>>>unjustified try to play for a win with 10...Ke7 11.Nxc5. But wait, 5.Qg4 in this
>>>variation also seems to be quiet strong with similar variations as above.
>>>
>>>So finally I do not see any defense for the plan Qg4 and Rxh5. Do you?
>>
>>ChessMaster 9000 still sees an advantage for black after Qg4 (see my follow-up
>>to the original CM listing).
>
>
>Yes, but CM does not have 4.Rxh5+!! in his PV. What is CMs opinion after you
>force this move on your board?

Good question.  It may also be that the pawn capture is awakened again.  I think
this position is awfully complicated, and it will take a lot of effort to come
to sure conclusions.



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