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Subject: Re: Maybe another Dangerous book-line in CM8000

Author: Chuck

Date: 18:12:10 03/10/01

Go up one level in this thread


On March 10, 2001 at 15:56:59, Mogens Larsen wrote:

>On March 10, 2001 at 14:41:02, John Merlino wrote:
>
>>OH MY GOD!!! I suspect this game was over in just a couple of seconds. The
>>opening book takes it all the way up to and including 21.Re3, at which point
>>it's a Mate in 5 for White! YIKES AND DOUBLE YIKES!
>>
>>The detective work is going to be in finding which Black move is the main
>>culprit and KILL IT! I'll try to get this into the patch, but I think it might
>>be too late. Any assistance would be greatly appreciated....
>
>What about 17...Nh7?
>
>The only result I got from checking program books was 14...Nbd5 instead of
>14...Rc8 from the Nimzo 8 book, but I don't think it decides the game.
>
>Some of the chess experts might know better though.
>
>Mogens.

Perhaps Black could do better than 14...Rc8. It looks like Black is in a
difficult position after 15. Qh3. I too, however, will defer judgment to someone
with a better eye for this position. But after 16.Bxh6, F6 thinks Black is OK
until he gets to the 15th ply, after searching more than 2 billion nodes, he
suddenly (as judged by ply depth, not elapsed time - he he) drops the score from
0.00 to +0.75. And I suspect it would only get worse.

Here is analysis from Fritz 6 after 16.Bxh6:

[D]2rq1rk1/1p2bpp1/pnb1pn1B/4N3/P2P4/1BN4Q/1P3PPP/R4RK1 b - - 0 1

Analysis by Fritz 6:

16...g7xh6!
  =  (0.00)   Depth: 1/1   00:00:00
16...g7xh6
  =  (0.00)   Depth: 2/2   00:00:00
16...g7xh6
  =  (0.00)   Depth: 3/3   00:00:00
16...g7xh6
  =  (0.00)   Depth: 4/4   00:00:00
16...g7xh6
  =  (0.00)   Depth: 5/5   00:00:00
16...g7xh6
  =  (0.00)   Depth: 6/6   00:00:00
16...g7xh6
  =  (0.00)   Depth: 7/7   00:00:00  2kN
16...g7xh6
  =  (0.00)   Depth: 8/8   00:00:00  89kN
16...g7xh6
  =  (0.00)   Depth: 9/9   00:00:00  178kN
16...g7xh6
  =  (0.00)   Depth: 10/10   00:00:01  865kN
16...g7xh6
  =  (0.00)   Depth: 11/11   00:00:01  979kN
16...g7xh6 17.Qh3xh6 Nb6-d5 18.Qh6-g5+ Kg8-h8 19.Bb3-c2 Nd5xc3 20.Qg5-h4+ Kh8-g8
21.Qh4-g5+
  =  (0.00)   Depth: 12/36   00:00:37  21216kN
16...g7xh6 17.Qh3xh6 Nb6-d5 18.Qh6-g5+ Kg8-h8 19.Bb3-c2 Nd5xc3 20.Qg5-h4+ Kh8-g8
21.Qh4-g5+
  =  (0.00)   Depth: 13/41   00:02:44  94240kN
16...g7xh6 17.Qh3xh6 Nb6-d5 18.Qh6-g5+ Kg8-h8 19.Bb3-c2 Nd5xc3 20.Qg5-h4+ Kh8-g8
21.Qh4-g5+
  =  (0.00)   Depth: 14/41   00:07:31  260637kN
16...g7xh6--
  ²  (0.47)   Depth: 15/42   00:27:17  916404kN
16...g7xh6-- 17.Qh3xh6 Nb6-d5 18.Rf1-e1 Nf6-g4 19.Ne5xg4 Be7-g5 20.Qh6-h3 Nd5-f4
21.Qh3-g3
  ±  (0.75)   Depth: 15/44   00:59:37  2027730kN

(Wilson, Columbia 10.03.2001)



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