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

Author: Uri Blass

Date: 10:36:32 02/21/03

Go up one level in this thread


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



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