Author: Uri Blass
Date: 18:31:09 02/03/03
Go up one level in this thread
On February 03, 2003 at 06:39:19, David Rasmussen wrote: >On February 02, 2003 at 17:17:00, John Merlino wrote: > >> >>Congratulations! That pawn behind enemy lines after 19...axb2+ was very >>impressive. A few questions/comments: >> >>When did Chezzz leave book? 6...Ng4 appears to be a poor move, and I can find no >>game in which it is played. 6...h6 seems to be statistically best for Black in >>this position, although 6...c5 is somewhat more common. >> > >6... Ng4 is exactly Chezzz's first move out of book :) >I admit it looks weird. Chezzz is very much in doubt about what to do here, it >shifts between many different moves: > >time nodes depth score pv >00:00:00.12 45kn 06/07/19 -0.131 6... Bg4 7. Be2 Nc6 8. O-O e5 > 9. dxe5 dxe5 (45214) >00:00:00.17 67kn 06/07/19 -0.122 6... Bd7 7. Be2 h6 8. Bxf6 exf6 > 9. O-O (67565) >00:00:00.20 78kn 06/07/21 -0.092 6... h6 7. Bf4 Nc6 8. Be2 Nh5 > 9. Be3 (78384) >00:00:00.25 93kn 06/07/21 --------------------------------------------------- >00:00:00.31 119kn 07/07/18 +0.033 6... h6 7. Bf4 Nc6 8. Bd3 Nh5 > 9. Be3 Bd7 (119744) >00:00:00.48 206kn 07/09/20 --------------------------------------------------- >00:00:00.75 337kn 08/09/23 -0.182 6... h6 7. Bf4 Nc6 8. Be2 e5 > 9. dxe5 Nh5 10. Be3 dxe5 (337205) >00:00:00.90 414kn 08/11/23 -0.181 6... Bg4 7. Be2 Nc6 8. O-O Nd7 > 9. Be3 Nb6 10. Qd3 (414671) >00:00:01.45 678kn 08/11/23 -0.166 6... Ng4 7. Be2 Nc6 8. O-O Bd7 > 9. Bf4 (678085) >00:00:02.12 1016kn 08/11/23 --------------------------------------------------- >00:00:02.56 1246kn 09/11/23 -0.222 6... Ng4 7. Be2 h6 8. Bd2 Nc6 > 9. O-O Bd7 10. Nb5 e5 (1246293) >00:00:03.10 1553kn 09/11/23 -0.171 6... h6 7. Bf4 Nc6 8. Be2 g5 > 9. Be3 Ng4 10. O-O Nxe3 > 11. fxe3 (1553974) >00:00:04.14 2068kn 09/11/23 -0.167 6... Bd7 7. Be2 h6 8. Bd2 Nc6 > 9. O-O e5 10. Be3 Ng4 (2068097) >00:00:06.53 3129kn 09/12/23 --------------------------------------------------- >00:00:07.87 3828kn 10/12/25 -0.191 6... Bd7 7. Be2 Nc6 8. d5 Nb4 > 9. O-O Ng4 10. Nd4 Ne5 > 11. Ncb5 (3828874) >00:00:13.98 6755kn 10/14/28 --------------------------------------------------- >00:00:17.67 8717kn 11/15/28 -0.175 6... Bd7 7. Be2 Ng4 8. h3 Nf6 > 9. e5 Ne8 10. O-O Nc6 > 11. Bf4 Bf5 (8717722) >00:00:23.57 11Mn 11/15/28 -0.132 6... h6 7. Bf4 Nc6 8. Be2 Ng4 > 9. O-O e5 10. dxe5 dxe5 > 11. Bd2 Be6 (11893037) >00:00:29.79 15Mn 11/16/29 --------------------------------------------------- >00:00:43.96 22Mn 12/17/30 -0.228 6... h6 7. Bf4 Ng4 8. Be2 Bd7 > 9. O-O Nc6 10. d5 Nce5 (22385994) >00:01:00.62 31Mn 12/17/30 -0.216 6... Bg4 7. Be2 Nc6 8. O-O Nd7 > 9. d5 Nb4 10. Be3 Bxf3 > 11. Bxf3 Bxc3 12. bxc3 (31149357) >00:01:05.73 33Mn 12/18/30 -0.215 6... Ng4 7. Be2 Nc6 8. h3 Nf6 > 9. O-O Bd7 10. e5 Nh5 > 11. exd6 cxd6 12. Nd5 (33732387) >00:01:43.62 53Mn 12/19/30 --------------------------------------------------- > >From the PV, I guess Chezzz thinks that it's better for white here to castle >kingside rather than queenside. And since it expects white to do h3, to chase >away the knight, this weakens the white kingside a bit. I don't know if this is >justified or not, but I think that's why. > >>21...Bf5 wins handily, according to Chessmaster 9000. The eval is more than 2 >>points in Black's favor, whereas after Chezzz's 21...Bd7 the eval is almost one >>point less (although I'm sure Chezzz would be winning with either move). >> > >Chezzz finds it too, although it takes 4:30 :) And I don't think Chezzz thought >that long in the game. If Chessmaster finds it in much shorter time, I'm not >surprised. It is because it is a much stronger program generally, and >specifically a much more effecient searcher. Maybe it's even because of some >specific extension etc. ? Latest Movei (p850) needs more than 5 minutes to fail high on Bf5. depth=11 +0.30 c8f5 Nodes: 68692412 NPS: 136443 Time: 00:08:23.45 depth=11 +0.59 c8f5 Nodes: 75871535 NPS: 135865 Time: 00:09:18.43 I guess that threat mate extensions may help to find it faster. After Bf5 Bxf5 Qa8 threats mate in 1 by Qa4#. 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.