Author: Tony Werten
Date: 11:48:43 06/09/01
Go up one level in this thread
On June 09, 2001 at 14:27:39, Uri Blass wrote: >On June 09, 2001 at 13:50:54, Peter Ackermann wrote: > >>While analyzing a little bit in old tournament books I found the following game >>from 1930 olympiad in Hamburg: >> >>(Richter,K - Abramavicius,L [C11] >>Hamburg ol (Men) Hamburg, 1930 >>1.d4 d5 2.Nc3 Nf6 3.Bg5 e6 4.e4 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6 7.Nf3 Nd7 8.Bd3 0–0 >>9.Qe2 c5 10.0–0–0 cxd4 11.g4 g6 12.h4 Bg7 13.h5 Re8 14.hxg6 hxg6 15.g5 e5 16.Rh4 >>Nf8 17.Rdh1 Bf5 18.Qf1 Rc8 19.Rh8+ Bxh8 20.Rxh8+ Kxh8 21.Qh1+ Nh7 22.Nf6 Kg7 >>23.Qh6+ 1–0 >> >>The "hot" positon arises after move 18 of black where white played a double rock >>sacrifice!! >> >>r1bq1rk1/pp1n1ppp/4pb2/2p5/3PN3/3B1N2/PPP1QPPP/R3K2R w KQ c6 0 10 >> >>!9.Rxh8+ seems to be a very difficult move to find for any computer program. Any >>program to find 19. Rh8+ in a reasonable time?? Would be glad to hear any >>successes..... I don't think most programs have problems with it. XiniX chooses this move but for the wrong reason. It just thinks the other moves are even worse. ply: 8/14 score:-5,631 Rxh8 fail high ply: 8/16 score:-5,052 time:26s 45Kn/s 1.Rxh8 Kxh8 2.Nf6 Nh7 3.Bxf5 gxf5 4.Qh3 Rxc2+ 5.Kxc2 Kg7 ply: 9/18 score:-4,852 Rxh8 fail high ply: 9/18 score:-4,041 time:34s 47 Kn/s 1.Rxh8 Kxh8 2.Nf6 Bg4 3.Nxg4 Nd7 4.Bb5 Rc5 5.Qh3+ Kg7 6.Bxd7 Qxd7 7.Nxe5 ply:10/20 score:-4,041 time: 59s 50Kn/s 1.Rxh8 Kxh8 2.Nf6 Bg4 3.Nxg4 Nd7 4.Bb5 Rc5 5.Qh3+ Kg7 6.Bxd7 Qxd7 7.Nxe5 ply:11/22 score:-3,841 Rxh8 fail high ply:11/22 score:-3,823 time: 89s 52Kn/s 1.Rxh8 Kxh8 2.Nf6 Bg4 3.Nxg4 Nd7 4.Bb5 Qc7 5.Qe2 a6 6.Bxd7 Qxd7 ply:12/26 score:-3,968 time:185s 53Kn/s 1.Rxh8 Kxh8 2.Nf6 Bg4 3.Nxg4 Nh7 4.Nxe5 Qa5 5.Nxf7+ Kg7 6.b4 Qxa2 Tony > >Your position is wrong > >The right position is: > > >[D]2rqrnkb/pp3p2/6p1/4pbP1/3pN3/3B1N2/PPP2P2/2K2Q1R w - - 0 1 > >Analysis by Deep Fritz (after showing it the right line and going back): > >20.Rxh8+-- > -+ (-6.16) Depth: 1/3 00:00:00 >20.Rxh8+-- Kxh8 > -+ (-7.06) Depth: 1/3 00:00:00 >20.c3! > -+ (-7.00) Depth: 1/5 00:00:00 >20.c3! dxc3 > -+ (-6.50) Depth: 1/8 00:00:00 >20.Qe2! > -+ (-6.28) Depth: 1/8 00:00:00 >20.Qe2! > -+ (-5.37) Depth: 1/8 00:00:00 >20.Qe2 Ne6 > -+ (-5.53) Depth: 2/5 00:00:00 >20.Qe2 Ne6 21.Kb1 > -+ (-5.44) Depth: 3/10 00:00:00 >20.Qe2 Ne6 21.Kb1 Nf4 > -+ (-5.59) Depth: 4/14 00:00:00 1kN >20.Kb1! > -+ (-5.56) Depth: 4/14 00:00:00 2kN >20.Kb1! Ne6 > -+ (-5.53) Depth: 4/14 00:00:00 2kN >20.Kb1 Ne6 21.Qe2 Nf4 22.Qd2 > -+ (-5.66) Depth: 5/19 00:00:00 12kN >20.Qe2! > -+ (-5.62) Depth: 5/19 00:00:00 13kN >20.Qg2! > -+ (-5.59) Depth: 5/19 00:00:00 17kN >20.Qg2! Qc7 > -+ (-5.56) Depth: 5/19 00:00:00 18kN >20.Rxh8+! > -+ (-5.53) Depth: 5/19 00:00:00 25kN >20.Rxh8+! Kxh8 21.Nf6 Kg7 22.Nxe8+ Qxe8 > -+ (-5.22) Depth: 5/25 00:00:00 27kN >20.Rxh8+! > -+ (-4.91) Depth: 6/18 00:00:00 30kN >20.Rxh8+! Kxh8 21.Nf6 Bg4 22.Nxg4 e4 23.Qh3+ Kg8 > -+ (-4.06) Depth: 6/19 00:00:00 34kN >20.Rxh8+! > -+ (-3.75) Depth: 7/18 00:00:00 49kN >20.Rxh8+! Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Bxd3 > ² (0.47) Depth: 7/25 00:00:00 121kN >20.Rxh8+-- > = (0.16) Depth: 8/18 00:00:00 131kN >20.Rxh8+-- Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 > = (0.00) Depth: 8/25 00:00:00 172kN >20.Rxh8+! > = (0.16) Depth: 9/25 00:00:00 261kN >20.Rxh8+! Kxh8 > ² (0.47) Depth: 9/25 00:00:00 309kN >20.Rxh8+-- > = (0.16) Depth: 10/22 00:00:00 354kN >20.Rxh8+-- Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Bxd3 24.Qh6 > = (0.00) Depth: 10/26 00:00:00 476kN >20.Rxh8+! > = (0.16) Depth: 11/26 00:00:01 742kN >20.Rxh8+! Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 > ² (0.47) Depth: 11/27 00:00:01 894kN >20.Rxh8+-- > = (0.16) Depth: 12/27 00:00:01 1153kN >20.Rxh8+-- Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Bxd3 24.Qh6 Ne6 25.Ng5 Rxc2+ > -+ (-1.84) Depth: 12/29 00:00:02 1850kN >20.Rxh8+! > -+ (-1.53) Depth: 13/32 00:00:05 3821kN >20.Rxh8+! Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Bxd3 > ² (0.47) Depth: 13/34 00:00:07 5229kN >20.Rxh8+-- > = (0.16) Depth: 14/31 00:00:09 6871kN >20.Rxh8+-- Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Bxd3 24.Qh6 > = (-0.03) Depth: 14/34 00:00:14 9940kN >20.Rxh8+! > ² (0.28) Depth: 15/34 00:00:27 18827kN >20.Rxh8+! Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Rc6 24.Bxf5 Rxf6 25.Be4 b5 > ² (0.47) Depth: 15/35 00:00:36 25280kN > >(Blass, Tel-Aviv 09.06.2001) > >The score is not convincing and it is clear that black missed a better try. > >Deep Fritz is more optimistic later but the score is still less than +1 > >After 20.Rxh8+ Kxh8 21.Qh1+ Kg8 22.Nf6+ Qxf6 23.gxf6 Rc6 24.Bxf5 Rxf6 > >Deep Fritz shows the following analysis: > >New game - Deep Fritz >[D]4rnk1/pp3p2/5rp1/4pB2/3p4/5N2/PPP2P2/2K4Q w - - 0 1 > >Analysis by Deep Fritz: > >25.Nxd4-- > ² (0.41) Depth: 1/4 00:00:00 >25.Nxd4-- exd4 > -+ (-1.47) Depth: 1/6 00:00:00 >25.Be4! > = (0.03) Depth: 1/6 00:00:00 >25.Be4! b6 26.Qf1 Nd7 27.Qb5 Rd8 28.Qd5 Re6 29.Qc4 Nc5 > ± (0.75) Depth: 1/10 00:00:00 >25.Be4 b5 26.Qe1 a6 27.Qa5 Rfe6 28.Qc7 Kg7 29.Kd2 Kf6 > ± (0.81) Depth: 2/10 00:00:00 >25.Be4 Rb6 26.c3 Nd7 > ± (0.78) Depth: 3/8 00:00:00 >25.Be4 b5 26.Kd2 Rc8 27.Nxe5 Rxf2+ > ± (0.78) Depth: 4/12 00:00:00 >25.Be4 b5 26.Kd2 Rc8 27.c3 dxc3+ 28.bxc3 > ± (0.81) Depth: 5/12 00:00:00 2kN >25.Be4 b6 26.Kd2 Nd7 27.Qh4 Nc5 > ± (0.78) Depth: 6/14 00:00:00 9kN >25.Be4 b6 26.Qf1 Nd7 27.Qb5 Rd8 28.Qd3 Nc5 > ± (0.78) Depth: 7/15 00:00:00 30kN >25.Be4 b6 26.Qf1 Nd7 27.Qb5 Rd6 28.Kd2 Kf8 > ± (0.75) Depth: 8/17 00:00:00 67kN >25.Be4 b6 26.Kd2 Nd7 27.Bd5 Nc5 28.b4 Rd6 29.bxc5 Rxd5 > ² (0.63) Depth: 9/22 00:00:00 218kN >25.Bd3! > ² (0.66) Depth: 9/23 00:00:00 390kN >25.Bd3! Rf4 26.Ng5 Re7 27.Ne4 Ne6 > ² (0.69) Depth: 9/23 00:00:00 448kN >25.Bd3 Rf4 26.Ng5 Re7 27.Ne4 Ne6 > ² (0.69) Depth: 10/24 00:00:01 921kN >25.Bd3 Rf4 26.Ng5 Re7 27.Qg2 Rc7 > ± (0.72) Depth: 11/26 00:00:03 1918kN >25.Be4! > ± (0.75) Depth: 11/27 00:00:04 2593kN >25.Be4! b6 26.Qh2 Rf4 27.Bc6 Re6 28.Bd5 Ref6 29.Qg3 a6 > ± (0.78) Depth: 11/27 00:00:04 2813kN >25.Be4 b6 26.Qh2 Nd7 27.Ng5 Nf8 28.Bd5 Rf5 > ± (0.75) Depth: 12/28 00:00:06 4174kN >25.Be4 b6 26.Qh2 Kg7 27.Nxe5 Rfe6 28.Ng4 > ± (0.75) Depth: 13/29 00:00:17 11365kN >25.Be4 b6 26.Qf1 Re7 27.Qb5 Rfe6 28.Qc4 Rd6 > ± (0.78) Depth: 14/32 00:02:21 86854kN > >(Blass, Tel-Aviv 09.06.2001) > >Uri >> >>Greetings Peter
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