Author: Uri Blass
Date: 02:07:01 10/21/03
Go up one level in this thread
On October 20, 2003 at 23:30:55, Dann Corbit wrote: >On October 20, 2003 at 22:42:34, Dann Corbit wrote: > >>On October 20, 2003 at 04:32:09, Jeroen Noomen wrote: >> >>>[Event "23rd DOCC"] >>>[Site "Leiden NED"] >>>[Date "2003.10.19"] >>>[Round "5"] >>>[White "Rebel"] >>>[Black "IsiChess MMX"] >>>[Result "1-0"] >>>[PlyCount "69"] >>>[EventDate "2003.??.??"] >>> >>>1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 >>> >>>Woops, is IsiChess going to repeat the Tiger-Fritz game from the Leiden >>>tournament in May 2003!? >>> >>>8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7 13. f5 Nc5 14. f6 >>>gxf6 15. gxf6 Bf8 16. Rg1 b4? >>> >>>No, it isn't! But the textmove is already a clear loser. >>> >>>17. Nd5 exd5 18. exd5 Bd7 >> >>Instead of Bd7, what about Nd7 here? All the chess programs prefer that move >>for black, as far as I have seen so far. Also, they give black a sizeable >>advantage. >> >>[D]r1b1kb1r/2q2p1p/p2p1P2/2nP4/1p1N4/5Q2/PPP4P/2KR1BR1 b kq - ce 158; acd 14; >>acs 600; pv Nd7 Qh5 Qc5 Rg7 Ne5 Re1 Bxg7 fxg7 Rg8 Qxh7 Rxg7 Qxg7 Qxd4 Qg8+ >>Ke7;|Nc5d7 > >Games that contain the above position after the choice of Nd7: Thanks I deleted all the games from your original post except games with Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 and all these games are draws. Fritz8.008 also show a draw score but I had no time to analyze it to 30 plies to see if the draw score is not changed Barahona,S - Granara Barreto,S r3kbr1/1bq2p1p/p1Np1P2/3Pn3/1p6/5Q1B/PPP4P/2KRR3 w q - 0 1 Analysis by Fritz 8: 22.Qh5! -+ (-1.53) Depth: 6/24 00:00:00 86kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Rg6 25.Rxe5+ dxe5 26.Bd7+ Kd8 27.Bf5+ -+ (-1.41) Depth: 7/29 00:00:00 106kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Rg6 25.Rxe5+ dxe5 26.Bd7+ Kd8 27.Bf5+ -+ (-1.41) Depth: 8/25 00:00:00 167kN 22.Qh5! µ (-1.12) Depth: 9/28 00:00:01 356kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Qa5 25.Qxh7 Rg6 µ (-1.03) Depth: 9/28 00:00:01 441kN 22.Qh5! µ (-0.75) Depth: 10/33 00:00:03 1250kN 22.Qh5 b3 23.axb3 Rg6 24.Nxe5 dxe5 25.Rxe5+ Kd8 26.Qe2 Qc5 27.Re8+ Kc7 28.b4 Rxe8 29.Qxe8 Qxb4 ³ (-0.59) Depth: 10/33 00:00:04 1627kN 22.Qh5! ³ (-0.31) Depth: 11/34 00:00:10 3878kN 22.Qh5! = (-0.03) Depth: 12/36 00:00:20 7977kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Qa5 25.Qxh7 Rg6 26.Qh8 = (0.00) Depth: 12/37 00:00:24 9844kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Qa5 25.Qxh7 Rg6 26.Qh8 Qa1+ 27.Kd2 Qa5+ 28.Kc1 = (0.00) Depth: 13/38 00:00:43 18074kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Qa5 25.Qxh7 Rg6 26.Qh8 Qa1+ 27.Kd2 Qa5+ 28.Kc1 = (0.00) Depth: 14/43 00:01:29 38569kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Rg6 25.Rxe5+ dxe5 26.Bd7+ Kd8 27.Bf5+ Ke8 28.Bd7+ Kd8 = (0.00) Depth: 15/42 00:03:28 92808kN 22.Qh5 b3 23.axb3 Bxc6 24.dxc6 Rg6 25.Rxe5+ dxe5 26.Bd7+ Kd8 27.Bf5+ Ke8 28.Bd7+ Kd8 = (0.00) Depth: 16/48 00:08:59 241904kN (, eim 21.10.2003) [Event "World Cup XII P069"] [Site "ICCF Email"] [Date "2000.10.01"] [Round "?"] [White "Kuerten, Detlef (GER)"] [Black "Bubnov, Vladimir Semenovich (RUS)"] [Result "1/2-1/2"] [WhiteElo "2192"] [ECO "B99y"] [EventDate "2000.??.??"] [Variation "Sicilian: Najdorf, Modern Main Line 13.f5 Nc5 14.f6: Perenyi's 16.Rg1"] [PlyCount "51"] 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.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15.gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 23.dxc6 Rg6 24.Rxe5+ dxe5 25.Bd7+ Kd8 26.Bh3+ 1/2-1/2 [Event "EM/M/171"] [Site "ICCF Email"] [Date "2001.12.20"] [Round "?"] [White "Brodda, Wolfgang (GER)"] [Black "Ludwig, Christoph (GER)"] [Result "1/2-1/2"] [ECO "B99y"] [EventDate "2001.??.??"] [Variation "Sicilian: Najdorf, Modern Main Line 13.f5 Nc5 14.f6: Perenyi's 16.Rg1"] [PlyCount "44"] 1.Nc3 c5 2.e4 d6 3.Nge2 Nf6 4.d4 cxd4 5.Nxd4 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15. gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 1/2-1/2 [Event "World Cup XII P069"] [Site "ICCF Email"] [Date "2000.10.01"] [Round "?"] [White "Kuerten, Detlef (GER)"] [Black "Bubnov, Vladimir Semenovich (RUS)"] [Result "1/2-1/2"] [WhiteElo "2192"] [ECO "B99y"] 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.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15.gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 23.dxc6 Rg6 24.Rxe5+ dxe5 25.Bd7+ Kd8 26.Bh3+ 1/2-1/2 [Event "EM/M/171"] [Site "ICCF Email"] [Date "2001.12.20"] [Round "?"] [White "Brodda, Wolfgang (GER)"] [Black "Ludwig, Christoph (GER)"] [Result "1/2-1/2"] [ECO "B99y"] 1.Nc3 c5 2.e4 d6 3.Nge2 Nf6 4.d4 cxd4 5.Nxd4 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15. gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 1/2-1/2 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "1/2-1/2"] [ECO "B99y"] [Variation "Sicilian: Najdorf, Modern Main Line 13.f5 Nc5 14.f6: Perenyi's 16.Rg1"] [PlyCount "51"] 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.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15.gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 23.dxc6 Rg6 24.Rxe5+ dxe5 25.Bd7+ Kd8 26.Bh3+ 1/2-1/2 [Event "?"] [Site "?"] [Date "????.??.??"] [Round "?"] [White "?"] [Black "?"] [Result "1/2-1/2"] [ECO "B99y"] [Variation "Sicilian: Najdorf, Modern Main Line 13.f5 Nc5 14.f6: Perenyi's 16.Rg1"] [PlyCount "44"] 1.Nc3 c5 2.e4 d6 3.Nge2 Nf6 4.d4 cxd4 5.Nxd4 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.f6 gxf6 15. gxf6 Bf8 16.Rg1 b4 17.Nd5 exd5 18.exd5 Nd7 19.Nc6 Bb7 20.Bh3 Ne5 21.Rge1 Rg8 22.Qh5 Bxc6 1/2-1/2
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