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Subject: Re: GK-DJ game 5 (ruffian says..)

Author: Uri Blass

Date: 18:08:25 02/05/03

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On February 05, 2003 at 21:01:52, Robert Hyatt wrote:

>On February 05, 2003 at 19:31:34, Will Singleton wrote:
>
>>On February 05, 2003 at 19:03:27, Drexel,Michael wrote:
>>
>>>On February 05, 2003 at 18:40:37, Will Singleton wrote:
>>>
>>>>On February 05, 2003 at 18:29:14, Martin Giepmans wrote:
>>>>
>>>>>On February 05, 2003 at 18:05:27, Will Singleton wrote:
>>>>>
>>>>>>On February 05, 2003 at 18:00:11, Martin Giepmans wrote:
>>>>>>
>>>>>>>
>>>>>>>Of course my engine thinks that it is winning big time after 16 g3
>>>>>>>(instead of Bxh7+).
>>>>>>>Is there any engine out there that doesn't agree?
>>>>>>>
>>>>>>>Martin
>>>>>>
>>>>>>The position:
>>>>>>
>>>>>>[D]rnb1r1k1/pp3ppp/2p5/3p4/3P1Pnq/P1NBPK2/1PQBN1P1/R4R2 w - - 0 16
>>>>>>
>>>>>>After analyzing with Ruffian, the following moves seem to be the best:
>>>>>>
>>>>>>16.g3 Nh2+ 17. Kf2 Ng4+ 18.Ke1 Qh3 19.Rg1 Nh2 20.Bxh7+ Kh8 21.Bd3 and white is
>>>>>>much better.
>>>>>>
>>>>>>(btw, if 18.Kg2 Qh2+ Kf3 g6! =+)
>>>>>>
>>>>>>So, perhaps there's something wrong after 18.Ke1...
>>>>>>
>>>>>>Hmmm.. Ruffian doesn't see anything after 14 ply, still has the main line above
>>>>>>at over 1 pawn for white.
>>>>>>
>>>>>>I can't see it.  Anyone have a clue?
>>>>>>
>>>>>>Will
>>>>>
>>>>>My engine also doesn't see it (neither do I, but that's not amazing ;))
>>>>>16. g3 wins, period.
>>>>>Or is there something hidden in the deep?
>>>>>Or was kasparov a little bit afraid?
>>>>>Or is Rolf right after all?
>>>>>
>>>>>Martin
>>>>
>>>>Actually, I think my analysis was wrong.  After 16.g3, black plays Qh2 instead
>>>>of Nh2+, and then it's far from clear.  Black looks like it will at least
>>>>equalize, and with white's king stuck in the center, black could win it.
>>>>
>>>>It appears GK can see far more than your average run-of-the-mill GM commentator.
>>>>
>>>>Will
>>>
>>>After 16...Qh2 white could play 17.Bxh7+ in case 17.f5 17...h5 or even 17...Nd7
>>>18.Kxg4 Qg2 is too dangerous for white.
>>>White should be safe after 17.Bxh7+.
>>>
>>>Michael
>>
>>Yes, it looks like you're right.
>>
>>Will
>
>
>When Kasparov chose Bxh7, he took a long time.  Crafty was analyzing the
>game live on ICC and turned in this 16 ply search result:
>
>               16->  33:34   1.59   16. g3 Nh2+ 17. Kf2 Ng4+ 18. Ke1 Qh3
>                                    19. Rg1 Nd7 20. Kd1 Nf2+ 21. Kc1 Nb6
>                                    22. Re1 Nxd3+ 23. Qxd3 Bf5 24. Ng1
>                                    Qg4 25. e4 Bxe4 26. Nxe4 dxe4 27. Rxe4
>                                    Rxe4 28. Qxe4 Qxg3

It is possible that crafty did not see deep enough.

In your line the king can go to a safe place but after 16.g3 Qh2 the king cannot
go back.

Uri



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