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Subject: Re: great book-move by Sandro Necchi ! (PGN with book moves)

Author: John Merlino

Date: 11:00:42 02/21/03

Go up one level in this thread


On February 21, 2003 at 13:52:52, Drexel,Michael wrote:

>On February 21, 2003 at 13:36:32, Uri Blass wrote:
>
>>On February 21, 2003 at 13:30:13, John Merlino wrote:
>>
>>>On February 21, 2003 at 12:43:52, Sandro Necchi wrote:
>>>
>>>>On February 21, 2003 at 10:55:56, Eduard Nemeth wrote:
>>>>
>>>>>On February 21, 2003 at 10:30:39, Peter Kasinski wrote:
>>>>>
>>>>>>On February 21, 2003 at 10:18:19, Eduard Nemeth wrote:
>>>>>>
>>>>>>>On February 21, 2003 at 09:20:55, Peter Kasinski wrote:
>>>>>>>
>>>>>>>>Just took a look at the position after move 20 (White) and it looks like
>>>>>>>>Shredder is still in the book.  Something tells me this one may go down as a
>>>>>>>>full point to IM Sandro Necci.
>>>>>>>>
>>>>>>>>PK
>>>>>>>
>>>>>>>
>>>>>>>[Event "12th IPCCC Paderborn"]
>>>>>>>[Site "?"]
>>>>>>>[Date "2003.??.??"]
>>>>>>>[Round "?"]
>>>>>>>[White "Shredder"]
>>>>>>>[Black "Fritz"]
>>>>>>>[ECO "B99"]
>>>>>>>[Result "*"]
>>>>>>>
>>>>>>>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5
>>>>>>>e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 h6 11. Bh4 g5
>>>>>>>12. e5 gxh4 13. exf6 Nxf6 14. Rhe1 Bd7 15. Re3 O-O-O
>>>>>>>16. Bxa6 bxa6 17. Qa8+ Qb8 18. Qxa6+ Qb7 19. Qa5 Ng4
>>>>>>>20. Rf3 Nxh2 21. Rh3 d5 22. Na4 Bxa4 23. Rc3+ Kb8 24. Qxa4
>>>>>>>Rd6 *
>>>>>>>
>>>>>>>
>>>>>>>Shredder will now win! (+-)
>>>>>>>
>>>>>>>Last bookmove from white was 16. Bxa6!
>>>>>>>
>>>>>>>Great move !
>>>>>>>
>>>>>>>Eduard
>>>>>>
>>>>>>I would have thought that the next few moves were from the book as well.  For
>>>>>>example: after 17 Qb8 (played immediately - only move!) Shredder's 18 Qxa6 is
>>>>>>not forced and Shredder played it instantly...  In any case - good opening
>>>>>>preparation.
>>>>>>
>>>>>>PK
>>>>>
>>>>>Yes.
>>>>
>>>>Hi Eduard,
>>>>
>>>>yes we were out of book on black 21...d5
>>>>
>>>>This corrects my previous e-mail.
>>>>
>>>>Sorry, but I was out of home so I could not check the book.
>>>>
>>>>Ciao
>>>>Sandro
>>>
>>>And 21...d5 appears to be a less than optimal move. In this position:
>>>
>>>[D]2kr3r/1q1bbp2/3pp2p/Q7/3N1P1p/2N4R/PPP3Pn/2KR4 b - - 0 21
>>>
>>>Chessmaster 9000 gives 21...Rdg8 an eval of 0.27 for White. After 21...d5, the
>>>eval is 1.27 for White, exactly one point higher.
>>>
>>>And then, after forcing the moves 22.Na4 Bxa4 23.Rc3+ Kb8 24.Qxa4 Rd6 25.Rb3 Rb6
>>>26.Rxb6 Qxb6 27.Rd3, the eval is over 2.5 for White.
>>>
>>>There must have been a better line for Black.... Is 21...Rdg8 that much better
>>>of a move?
>>>
>>>jm
>>
>>21...e5 is also an option to check.
>>
>>After 21...d5 yace could learn score of +2.xx after analysis by going backward
>>in the game and I could not see more than +1 after 21...e5.
>>
>>Uri
>
>Try 21... e5 22. Nd5 Bxh3 23. Qc3+ Kd7 24. Qxh3+ Ke8 25. Nf5.

The King gives this line (which does appear to be best play) an eval of a little
over +1.

jm



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