Author: Drexel,Michael
Date: 11:35:01 08/24/04
Go up one level in this thread
On August 24, 2004 at 14:12:41, Uri Blass wrote: >[D]r3br2/2q2pbk/p2p1npp/nppP4/4PR2/1PP1B1NP/P1BNQ1P1/R5K1 w - - 0 1 > > >Yace could learn a score of +0.42 from 1.Nf5 from the following tree >Liberzon said about the move 1.Nf5(typical sacrifice) > >I wonder if there are a lot of games when humans played a similiar sacrifice and Here is one of my own games where a similar sacrifice was played. It was correct.I guess even amateur programs will find it quickly today: [Event "Landesliga Sued 9899"] [Site "Bayern"] [Date "1999.??.??"] [Round "?"] [White "Drexel, Michael"] [Black "Matevzic, Christian"] [Result "1-0"] [ECO "A57"] [WhiteElo "2190"] [BlackElo "2200"] [PlyCount "71"] [EventDate "1998.??.??"] [Source "ChessBase"] [SourceDate "1999.11.16"] 1. d4 Nf6 2. c4 c5 3. d5 b5 4. Nd2 bxc4 5. e4 e6 6. Bxc4 Bb7 7. Ne2 exd5 8. exd5 d6 9. O-O Be7 10. Ng3 O-O 11. Re1 Nbd7 12. b3 Re8 13. Ndf1 Bf8 14. Rxe8 Qxe8 15. Bb2 g6 16. Qd2 Bg7 17. Bb5 Qd8 18. Ne3 Nb6 19. Rd1 Qc7 20. h4 Rd8 21. h5 a6 22. hxg6 hxg6 23. Nef5 Bh8 24. Bc4 Bc8 25. Qg5 Bxf5 26. Bxf6 Bxf6 27. Qxf6 Bc8 28. Re1 Nd7 29. Qg5 Ne5 30. f4 Ng4 31. f5 Ne5 32. f6 Ng4 33. Re4 Qa5 34. Rxg4 Qe1+ 35. Kh2 Bxg4 36. Qh6 1-0 [D] 3r2k1/1bq2pb1/pn1p1np1/1BpP4/8/1P2N1N1/PB1Q1PP1/3R2K1 w - - 0 23 23.Nef5! Michael >if the sacrifice was also correct in these games. > >Here is analysis (note that in the game white blundered by 2.e5 but I tried to >analyze to see if liberzon was correct when he said that white had a winning >position after 2.Rxf5 and it seems that he was correct inspite of not proving a >forced win) > >[Event "?"] >[Site "?"] >[Date "????.??.??"] >[Round "?"] >[White "New game"] >[Black "?"] >[Result "*"] >[SetUp "1"] >[FEN "r3br2/2q2pbk/p2p1npp/nppP4/4PR2/1PP1B1NP/P1BNQ1P1/R5K1 w - - 0 1"] >[PlyCount "5"] > >1. Nf5 gxf5 2. Rxf5 Nd7 (2... Kg8 3. Bxh6 Bxh6 (3... Nh7 4. Bxg7 Kxg7) 4. Rxf6 >Kg7 5. e5 Rh8 6. exd6) (2... Kh8 3. Bxh6 Nh7 (3... Bxh6 4. Rxf6 Kg7 5. e5) ( >3... Rg8 4. Bxg7+ Kxg7 5. e5) 4. Bxg7+ Kxg7 5. e5 f6 6. e6) (2... Ng8 3. e5 f6 >4. exd6 Qb7 5. Rxf6+ Kh8) 3. e5 * > >Uri
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