Author: Eelco de Groot
Date: 00:16:34 02/22/06
Go up one level in this thread
On February 22, 2006 at 03:00:11, M Hurd wrote: >On February 22, 2006 at 01:24:06, Eelco de Groot wrote: > >>I think this position is a bit unclear. Shredder at 16 ply only gave +0.33 for >>Bg5, then fail-high and fail-low. The result could be of some theorethical >>importance, see my post below >>http://www.talkchess.com/forums/1/message.html?488487 But; do other programs >>also play 22.Bg5 and do they give a big advantage for White? >> >>[D]rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - - >> >>Engine: Shredder 9 UCI (200 MB, Athlon 2009 MHz) >>gemaakt door Stefan Meyer-Kahlen >> >>17 22:27 +1.02 22.Bg5 Rxe1+ 23.Rxe1 Qa5 24.Kd1 (666.458.223) 494 >> >>17 26:04 +0.43 22.Bd3 Raa7 23.Kb1 Qe8 24.Qxe8+ Rxe8 >> 25.Rxe8+ Nxe8 (766.596.712) 489 >> >>17 26:00 +0.38 22.Bc4 Raa7 23.f3 Qa5 24.Rxe7 Rxe7 >> 25.Kb1 Re1+ 26.Rxe1 Qxe1+ 27.Bc1 Qe5 >> 28.a3 Qe8 29.Qxe8+ Nxe8 30.Bb2 Nc7 (764.642.249) 489 >> >> Eelco > >Hello Eelco > >Fritz 9 and Rybka seem to like Bg5 > >New game - Junior 9 >rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - - 0 1 > >Analysis by Junior 9: > >1.Bxa6 Rxa6 2.Nf5 Bxf5 > -+ (-2.37) Depth: 3 00:00:00 1kN >1.Be2 Nxd5 2.Bd3 > = (0.13) Depth: 3 00:00:00 1kN >1.Bd3 Nbd7 > ± (0.99) Depth: 3 00:00:00 2kN >1.Bd3 Qe8 2.Rxe7 Qxe7 3.Bc4 > ² (0.60) Depth: 6 00:00:00 42kN >1.Bc4 Bh3 2.Rxe7 Qxe7 3.Kb1 > ± (0.82) Depth: 6 00:00:00 56kN >1.Rxe7 Qxe7 2.Bd3 Bd7 3.Nf5 Bxf5 4.Bxf5 Nxd5 > ± (0.94) Depth: 6 00:00:00 75kN >1.Rxe7 Qxe7 2.Bd3 Qf7 3.Be3 Bb7 4.Qxf7+ Kxf7 5.Bg6+ Kg8 > ± (0.75) Depth: 9 00:00:00 377kN >1.Bd3 Raa7 2.Kb1 Be5 3.Nf3 Qxd5 4.Nxe5 > ± (0.80) Depth: 9 00:00:00 774kN >1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Qe8 4.Qxe8+ Rxe8 5.Rxe8+ Nxe8 6.Be6+ Kh7 7.Be3 Nd7 > ² (0.59) Depth: 12 00:00:05 10007kN >1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Qa5 4.Be6+ Rxe6 5.Rxe6 Qxa2 6.Rd1 > ± (0.88) Depth: 14 00:00:22 42207kN >1.Bd3 Raa7 2.Bd2 Nbd7 3.Rxe7 Qxe7 4.Nf5 Ne5 5.Nxe7+ Rxe7 6.Bf4 Nxg6 7.Bxd6 Rd7 >8.Bb8 Ne7 9.d6 > ² (0.37) Depth: 16 00:03:32 398669kN >1.Bc4 Raa7 2.Bf4 a5 3.Rxe7 Rxe7 4.Bxd6 Qxd6 5.Kb1 a4 6.Rc1 axb3 > ² (0.46) Depth: 16 00:06:40 751497kN > >New game - Rybka 1.01, 120'/40+60'/20+30' >rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - - 0 1 > >Analysis by Rybka 1.01 Beta 13d 32-bit: > >1.Bd3 > = (0.21) Depth: 3 00:00:00 >1.Bd3 > = (0.13) Depth: 4 00:00:00 >1.Bd3 Raa7 > = (0.22) Depth: 5 00:00:00 >1.Bd3 Rb7 2.Nf5 > ² (0.58) Depth: 6 00:00:00 24kN >1.Bd3 Rb7 2.Nf5 Bxf5 > ² (0.56) Depth: 7 00:00:01 42kN >1.Bd3 Rb7 2.Nf5 Bxf5 3.Bxf5 c4 > ² (0.45) Depth: 8 00:00:02 66kN >1.Bd3 Raa7 2.Bd2 Be5 3.Qg5 Bd4 > ² (0.32) Depth: 9 00:00:07 237kN >1.Bd3 Raa7 2.Bd2 Be5 3.Qg5 Bd4 4.Ng6 > ² (0.47) Depth: 10 00:00:16 539kN >1.Bd3 Raa7 2.Bd2 c4 3.Bxc4 Qb6 4.Nf5 Bxf5 > ² (0.43) Depth: 11 00:00:31 1016kN >1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Nbd7 4.Be6+ Kh8 5.Bg5 Nf8 6.Qf5 > ² (0.35) Depth: 12 00:01:22 2540kN >1.Bg5 Rxe1+ 2.Rxe1 axb5 3.Bxf6 Qxf6 4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Nf5 Rxa2 > ± (1.01) Depth: 12 00:02:03 3756kN >1.Bg5 Rxe1+ 2.Rxe1 axb5 3.Bxf6 Qxf6 4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Nf5 Rxa2 > ± (1.07) Depth: 13 00:02:38 4913kN >1.Bg5 Rxe1+ 2.Rxe1 axb5 3.Bxf6 Qxf6 4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Nf5 Rxa2 > ± (1.31) Depth: 14 00:04:13 7923kN >1.Bg5 Rxe1+ 2.Rxe1 axb5 3.Bxf6 Qxf6 4.Re8+ Bf8 5.Qxf6 gxf6 6.Rxc8 Kf7 7.Nf5 c4 > ± (1.01) Depth: 15 00:06:27 11792kN > >New game - Fritz 9, 120'/40+60'/20+30' >rnbq2k1/4r1p1/p2b1nQB/1BpP4/7N/1P4P1/P4P1P/2K1R2R w - - 0 1 > >Analysis by Fritz 9: > >1.Bd3 Raa7 2.Bg5 Rxe1+ 3.Rxe1 Re7 4.Rxe7 Qxe7 5.Nf3 > = (0.04) Depth: 7/25 00:00:00 96kN >1.Bd3 Raa7 2.Nf5 Bxf5 3.Bxf5 Qa5 4.Be6+ Kh8 5.Bg5 Be5 6.Kb1 > = (0.23) Depth: 8/26 00:00:00 296kN >1.Bd3 c4 2.Bxc4 Bg4 3.f4 Raa7 4.Bg5 Bh5 5.Qf5 > = (0.21) Depth: 9/31 00:00:01 982kN >1.Bd3-- > = (-0.07) Depth: 10/34 00:00:04 3938kN >1.Bd3 Raa7 2.Nf5 > = (-0.07) Depth: 10/34 00:00:05 4319kN >1.Bc4! > = (-0.06) Depth: 10/34 00:00:05 4828kN >1.Bc4! > = (0.09) Depth: 10/34 00:00:06 5366kN >1.Bc4 Raa7 2.Bg5 Rxe1+ 3.Rxe1 Re7 4.Re3 Qe8 5.Nf5 Qxg6 > = (0.23) Depth: 10/34 00:00:07 6374kN >1.Bc4 Raa7 2.Bd2 Rxe1+ 3.Rxe1 Nbd7 4.f4 Nf8 5.Qc2 Bb8 6.Qd3 Re7 > = (0.09) Depth: 11/37 00:00:11 9596kN >1.Bc4 Raa7 2.Bd2 Rxe1+ 3.Rxe1 Nbd7 4.f4 Nf8 5.Qg5 N8h7 6.Qg6 Nf8 > = (0.00) Depth: 12/37 00:00:20 18517kN >1.Bg5! > = (0.01) Depth: 12/43 00:00:33 31260kN >1.Bg5! > = (0.16) Depth: 12/43 00:00:33 31747kN >1.Bg5! > ² (0.47) Depth: 12/43 00:00:35 33895kN >1.Bg5! > ± (0.75) Depth: 13/42 00:01:02 60859kN >1.Bg5 Qf8 2.Bd3 c4 3.Bxc4 Raa7 4.f4 Rf7 5.Nf3 Bb4 6.Re2 Bc3 7.Ne5 Qa3+ 8.Kb1 > ± (0.98) Depth: 14/42 00:01:40 101366kN >1.Bg5 Qf8 2.Bd3 c4 3.Bxf6 cxd3 4.Bxe7 Bxe7 5.d6 d2+ 6.Kxd2 Qxf2+ 7.Kc1 Bf8 8.Qe4 > ± (1.08) Depth: 15/43 00:03:58 247983kN >1.Bg5! > ± (1.36) Depth: 16/49 00:08:20 525978kN > >Regards > >Mike Hello Mike, interesting also to see that Junior, who you would expect to make less fuss about putting its own pieces "en prise" first wants to bring his other Bishop b5 in safety with Bc4 or Bd3! All three programs give White, Topalov in his ficticious revanche game against Anand, again the advantage here! Thanks for the analysis! Regards, Eelco
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