Author: Vincent Diepeveen
Date: 01:45:13 07/12/01
Go up one level in this thread
On July 11, 2001 at 19:17:45, Uri Blass wrote: You're relying on a slow preprocessor score! Try other programs and analyze a bit. The whole line is very complex. It's not a clear win for white. Bf1 is a clear & simple win. I'm not saying white is losing the line, but even if it's going to get a draw, which initially it appears to be, then still that's very bad for white! I didn't find a win, definitely not a win which programs could pickup at a small search depth! >On July 11, 2001 at 18:59:27, Vincent Diepeveen wrote: > >>On July 11, 2001 at 17:25:34, James T. Walker wrote: >> >>>Junior 7 likes Nxd5 after 5 seconds on my Athlon 900. I holds it for over 3 >>>minutes with a score of less than 1. Junior 7 likes Nxd5 cxd5 Rxd5 but then >>>likes Nc4 Bc5 as a followup. If I force feed it Rd8 instead of Nc4 the score >>>goes slightly over +1. So anyway Junior 7 would play this (Nxd5) move probably >>>in blitz. >>>Jim >> >>we need a mainline. >> >>Nxd5 can be played because of 2 reasons >> a) patzerscores >> b) it sees the whole trick >> >>in case of a it didn't solve it. In case of b it must show >>at least next moves in mainline: >> nxd5 cd rd5 nc4 bf1! >> >>if other moves as bf1 shown then forget it. > >Junior7 does not find it for Bf1 but I am not sure if it has patzer score. >The question is if white is losing after Rf5+ > >I know that Amir worked a long time on the evaluation and saying patzer score >for a different evaluation is not correct. > >I guess that Amir changed the evaluation of Junior because the new evaluation is >better than the previous evaluation. > >Here is Junior7's analysis on a slow p200 > > >[D]r5nr/pp3kpp/2pb4/3pn1P1/8/2N1B2B/PPP2P1P/2KRR3 w - - 0 1 > >Analysis by Junior 7: > >1.g6+ hxg6 2.Bf1 Rxh2 > = (-0.23) Depth: 3 00:00:01 >1.a4 Ne7 > ± (0.85) Depth: 3 00:00:01 >1.Ne2 Ne7 > ± (0.95) Depth: 3 00:00:01 >1.Bf5 Ne7 > ± (0.97) Depth: 3 00:00:01 >1.Bf5 Nf3 2.Re2 Bxh2 3.Kb1 > = (0.04) Depth: 6 00:00:01 2kN >1.Ne4 Bb4 2.Bd2 Be7 3.Ng3 Nf3 4.Be6+ Ke8 5.Bxg8 Rxg8 > ± (0.77) Depth: 6 00:00:01 16kN >1.Ne4 Bb4 2.Bd2 Be7 3.Ng3 Nf3 4.Be6+ Ke8 5.Re3 Nxd2 6.Kxd2 Bxg5 > ² (0.54) Depth: 9 00:00:02 188kN >1.Bg2 Ne7 2.Bd4 N5g6 3.h3 Bf4+ 4.Be3 Bxe3+ 5.Rxe3 > ² (0.59) Depth: 9 00:00:02 200kN >1.f4 Nc4 2.Bd2 Nxd2 3.Rxd2 b5 4.Be6+ Kg6 5.Ne2 > ² (0.68) Depth: 9 00:00:03 323kN >1.f4 Nc4 > ² (0.38) Depth: 12 00:00:12 1401kN >1.Bg2 Ne7 2.Ne4 Bb4 3.Nd2 Ng4 4.c3 Nxe3 5.Rxe3 Bd6 > ² (0.59) Depth: 12 00:00:13 1629kN >1.Nxd5 cxd5 2.Rxd5 Nc4 3.Rf5+ Kg6 4.Bd4 Ne7 5.Re6+ Kh5 6.Rf7 Rac8 7.Bxg7 Rhe8 > ± (0.81) Depth: 12 00:00:29 3685kN >1.Nxd5 cxd5 2.Rxd5 Nc4 3.Rf5+ Kg6 4.Bd4 Ne7 5.Re6+ Kh5 6.Rf7 Rad8 7.Bf1 b5 >8.Bxc4 bxc4 9.Rfxe7 > ± (0.84) Depth: 14 00:02:06 15219kN >1.Nxd5 cxd5 2.Rxd5 Nc4 3.Rf5+ Kg6 4.Bd4 Ne7 5.Re6+ Kh5 6.Rf7 Ng6 7.Bxg7 Bf4+ >8.Kb1 Rhd8 9.Re4 > ± (0.77) Depth: 15 00:06:52 46133kN > >(blass, tel-aviv 12.07.2001) > >Uri
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