Author: Uri Blass
Date: 11:09:29 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. Your lines seems to be correct but I do not plan to give my computer a lot of time to check if black is lost after 20...Nxh2 It is hard to find the losing mistake even in that case because we need to check if black had good alternatives at moves 16,19,20 Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.