Author: Uri Blass
Date: 14:41:19 12/10/05
Go up one level in this thread
On December 10, 2005 at 17:27:36, Sune Larsson wrote: >On December 10, 2005 at 16:55:52, Uri Blass wrote: > >>On December 10, 2005 at 16:19:19, Sune Larsson wrote: >> >>>Hi Gordon, >>> >>>I just had a look at game 4 in your match Rybka-Shredder. Rybka was white here >>>but found itself very uncomfortable after the opening. For white, this is a very >>>passive variation - early giving up lots of space to black - leading to a >>>cramped position for white. Obviously that didn't suit Rybka at all. It couldn't >>>find a plan but instead tried to shuffle pieces for a standstill. >>>16.Nf3-h4, 17.Nh4-f3, 18.Nf1-d2, 19.Nd2-f1, 20.Nf1-d2 etc... >> >>I think that the problem is that the variation is simply not good for white > > > >DeepF8 book plays 2.b3 actively in 8% - Shr9 book also but 4% > >DeepF8 book has 8 games with 9.d4 and 50% result and prob. 100% > 0 games with 9.d3 (green) > >Shr9 book has 9.d4? and 9.d3 as green move. > >Right - this is not a good variation for computers as white. Note that I analyzed more the game and it seems that 39.Nf4 was the blunder of rybka My rybka gives positive score for 39.f4 that was expected by shredder and the score of Shredder goes down after that move so I think that choosing f4 may be result of bad time management of rybka because with slightly more time it could find a better move. Rybka 1.0 Beta 32-bit - Deep Shredder 9 UCI, Rybka Test, 120'/40+60'/20+30' 2005 [D]1b3rk1/1r4pb/2n1q2p/1ppNnp2/3pP3/1P1P2PP/1B1N1P2/R2QRBK1 w - - 0 1 Analysis by Rybka 1.0 Beta 32-bit: 39.f4 = (0.03) Depth: 3 00:00:00 39.Nf4 = (0.12) Depth: 3 00:00:00 39.Nf4 = (0.11) Depth: 4 00:00:00 39.f4 = (0.18) Depth: 4 00:00:00 39.f4 Nxd3 = (0.13) Depth: 5 00:00:00 39.f4 Nxd3 40.Bxd3 = (-0.01) Depth: 6 00:00:00 9kN 39.Nf4 Qc8 40.Ba3 = (0.14) Depth: 6 00:00:00 21kN 39.Nf4 Qc8 40.h4 Nb4 = (0.11) Depth: 7 00:00:00 41kN 39.Nf4 Qc8 40.h4 Nb4 41.exf5 = (0.09) Depth: 8 00:00:01 70kN 39.Nf4 Qc8 40.h4 g5 41.hxg5 hxg5 = (0.06) Depth: 9 00:00:02 153kN 39.Nf4 Qc8 40.Ba3 g5 41.Nh5 b4 42.Bb2 = (0.08) Depth: 10 00:00:06 349kN 39.Nf4 Qc8 40.Ba3 Bd6 41.exf5 Bxf5 42.Ne4 Bxe4 = (0.00) Depth: 11 00:00:11 644kN 39.Nf4 Qc8 40.Nd5 Qd7 41.f4 Nxd3 42.Bxd3 fxe4 43.Nxe4 = (-0.07) Depth: 12 00:00:30 1725kN 39.Nf4 Qc8 40.Ba3 b4 41.Bb2 Rbf7 42.h4 g5 43.hxg5 hxg5 = (-0.07) Depth: 13 00:01:08 3816kN 39.Nf4 Qf7 40.h4 g5 41.hxg5 hxg5 42.Nh3 fxe4 43.dxe4 Nb4 ³ (-0.45) Depth: 14 00:03:05 10630kN 39.f4 Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 = (-0.09) Depth: 14 00:03:32 11938kN 39.f4 Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 = (0.08) Depth: 15 00:05:39 18790kN 39.f4 Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 = (0.05) Depth: 16 00:08:16 27090kN (, 11.12.2005) After 39.f4 Rybka 1.0 Beta 32-bit - Deep Shredder 9 UCI, Rybka Test, 120'/40+60'/20+30' 2005 1b3rk1/1r4pb/2n1q2p/1ppNnp2/3pPP2/1P1P2PP/1B1N4/R2QRBK1 b - f3 0 1 Analysis by Shredder 9 UCI: 39...fxe4 -+ (-1.85) Depth: 1/4 00:00:00 39...fxe4 40.dxe4 -+ (-2.03) Depth: 1/4 00:00:00 39...fxe4 40.dxe4 -+ (-1.78) Depth: 2/12 00:00:00 39...fxe4 40.dxe4 Nd7 µ (-1.32) Depth: 2/12 00:00:00 39...fxe4 40.dxe4 µ (-1.07) Depth: 3/12 00:00:00 39...fxe4 40.dxe4 Ng6 41.Qg4 µ (-0.80) Depth: 3/12 00:00:00 39...Nxd3 µ (-0.81) Depth: 3/15 00:00:00 39...Nxd3 40.Bxd3 fxe4 µ (-1.08) Depth: 3/15 00:00:00 39...Nxd3 40.Bxd3 µ (-0.83) Depth: 4/15 00:00:00 39...Nxd3 40.Bxd3 ³ (-0.33) Depth: 4/15 00:00:00 39...Nxd3 40.Bxd3 fxe4 41.Qh5 = (-0.03) Depth: 4/15 00:00:00 39...fxe4 = (-0.04) Depth: 4/16 00:00:00 39...fxe4 ³ (-0.39) Depth: 4/21 00:00:00 39...fxe4 40.dxe4 Nd7 41.Qg4 Bf5 ³ (-0.68) Depth: 4/21 00:00:00 39...Qg6 ³ (-0.69) Depth: 4/21 00:00:00 39...Qg6 40.fxe5 Qxg3+ 41.Bg2 Bxe5 µ (-0.82) Depth: 4/21 00:00:00 39...Qg6 40.fxe5 ³ (-0.57) Depth: 5/21 00:00:00 39...Qg6 40.Kg2 fxe4 41.dxe4 Nd7 42.Bd3 ³ (-0.41) Depth: 5/21 00:00:00 39...fxe4 ³ (-0.42) Depth: 5/21 00:00:00 39...fxe4 40.dxe4 Nd7 41.Qg4 Bf5 42.Ne7+ Nxe7 ³ (-0.45) Depth: 5/21 00:00:00 39...Nxd3 ³ (-0.46) Depth: 5/21 00:00:00 39...Nxd3 40.Bxd3 fxe4 41.Qh5 Bg6 ³ (-0.63) Depth: 5/21 00:00:00 39...Nd7 ³ (-0.64) Depth: 5/21 00:00:00 39...Nd7 40.Bg2 fxe4 41.dxe4 µ (-0.84) Depth: 5/21 00:00:00 39...Nd7 40.Bg2 fxe4 41.dxe4 Bxe4 µ (-0.84) Depth: 6/21 00:00:01 40kN 39...Nxd3 µ (-0.85) Depth: 6/21 00:00:01 54kN 39...Nxd3 µ (-1.20) Depth: 6/21 00:00:01 57kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Qc2 Nb4 µ (-1.38) Depth: 6/21 00:00:01 59kN 39...Nxd3 40.Bxd3 fxe4 41.Qe2 Qxd5 42.Bxe4 Bxe4 43.Qxe4 -+ (-1.56) Depth: 7/22 00:00:01 84kN 39...Nxd3 40.Bxd3 fxe4 41.Bxe4 Bxe4 42.Nxe4 Qxd5 43.Qc2 Rf5 -+ (-1.42) Depth: 8/22 00:00:01 133kN 39...Nxd3 40.Bxd3 µ (-1.17) Depth: 9/22 00:00:03 191kN 39...Nxd3 40.Bxd3 fxe4 41.Qh5 Bg6 42.Rxe4 Qxe4 43.Qxg6 Qxd5 44.Qh7+ µ (-0.93) Depth: 9/24 00:00:03 224kN 39...Nxd3 40.Bxd3 µ (-1.18) Depth: 10/25 00:00:04 472kN 39...Nxd3 40.Bxd3 fxe4 41.Qc2 Qxd5 42.Bxe4 Bxe4 43.Qxe4 Qxe4 44.Nxe4 c4 45.Nc5 -+ (-1.48) Depth: 10/25 00:00:04 620kN 39...Nxd3 40.Bxd3 µ (-1.23) Depth: 11/26 00:00:06 878kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Rc1 Ba7 43.Ba3 Nb4 44.Bxb4 cxb4 45.Kh2 Rbf7 µ (-0.89) Depth: 11/28 00:00:06 1079kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 µ (-1.13) Depth: 12/32 00:00:07 2334kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 44.Kh2 Bf5 45.Ra6 Rbf7 46.Qc2 Be6 µ (-0.93) Depth: 13/37 00:00:09 4095kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 44.Nf2 Rbf7 45.Bxh7+ Kxh7 46.Qd3+ g6 47.Ne4 Bc7 48.Ra6 µ (-0.77) Depth: 14/38 00:00:18 7985kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Ba7 43.Qc2 Bf5 44.Bxc5 Bxc5 45.Nxc5 Bxd3 46.Nxd3 Re7 47.Kh2 Re3 48.Qc5 Qxc5 ³ (-0.61) Depth: 15/38 00:00:37 16919kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Ba3 Nb4 43.Bxb4 cxb4 44.Nf2 Rbf7 45.Bxh7+ Kxh7 46.Qd3+ g6 47.Ne4 ³ (-0.68) Depth: 16/41 00:01:17 35311kN 39...Nxd3 40.Bxd3 ³ (-0.43) Depth: 17/41 00:02:22 64317kN 39...Nxd3 40.Bxd3 fxe4 41.Nxe4 Qxd5 42.Rc1 Ba7 43.Ba3 Nb4 44.Nxc5 Nxd3 45.Nxd3 b4 46.Nxb4 d3+ 47.Kh2 Qa5 48.Ra1 Bf2 49.Re5 ³ (-0.28) Depth: 17/42 00:02:48 76606kN (, 11.12.2005)
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