Author: Uri Blass
Date: 10:03:09 12/01/01
Go up one level in this thread
On November 30, 2001 at 18:26:46, Uri Blass wrote: >On November 30, 2001 at 17:57:18, Ed Schröder wrote: > >>On November 30, 2001 at 14:49:45, Uri Blass wrote: >> >>> >>>[D]rr6/q2kbp2/bnp1p2p/pp1pP1pP/2nP2P1/P1P2N2/NP3P2/1KBRQB1R w - - 0 25 >>> >>>Junior played Ka1 and lost >>> >>>here is yace(only material version) logfile for that position(it was slowed down >>>by a big factor in the first seconds so the times are not important) >>> >>>It was using the following material values: >>>pawn:0.8,knight 3.4 bishop 3.5,rook 5,queen 10.01 >>> >>>I prefer 1,3,5,9 but the values are the values from the version that I got from >>>the programmer >>> >>> >>>You can see that b4 has a stable score at deothes 16,17 of 0.1 pawns that means >>>an advantage of only bishop for a knight >>>After Ka1 white is losing a pawn >>> >>>You can also see that Junior7 also likes Ka1 after few minutes. >>> >>>I believe that b4 could at least give Junior better practical chances to save >>>the game against piket. >>> >>>I also believe that computers can practically by good defence win games or at >>>least draw against king attacks of humans when the hardware gets faster >>> >>>Even if the computer gets into a bad position humans are going to have big >>>problems to find the right moves against correct defence >>> >>>What is your opinion? >> >> >>I wonder if Ka1 matters at all, Rebel also needs quite some time to >>switch to b4. >> >>Ed >> >>================================================= >> >>00:00:10 10.00 -0.37 1.Bd3 b4 2.Bc2 bxa3 3.b3 Na4 4.Qg1 >> Kc8 5.Nd2 (8) >> >>00:00:19 10.02 -0.31 1.Nd2 b4 2.cxb4 axb4 3.Nxc4 Nxc4 >> 4.a4 b3 5.Bxc4 Bxc4 6.Nc3 c5 (11) >> >>00:01:10 10.11 -0.19 1.Qe2 b4 2.Qc2 >>00:01:24 10.14 -0.18 1.b4 axb4 2.Bxc4 >>00:01:28 10.15 0.31 1.Ka1 Ke8 2.Bd3 Nd7 3.Qe2 b4 4.axb4 >> axb4 (84) >> >>00:01:52 11.00 0.16 1.Ka1 Nc8 2.Bxc4 bxc4 3.Qe2 Rb7 >> 4.Qc2 (88) >> >>00:02:15 12.00 0.14 1.Ka1 Nc8 2.Bxc4 bxc4 3.Qe2 Rb7 >> 4.Qc2 (125) >> >>00:04:40 13.00 -0.86 1.Ka1 b4 2.Nd2 Nxd2 >>00:05:03 13.01 -0.18 1.b4 axb4 2.Bxc4 >>00:08:47 14.00 -0.30 1.b4 Bc8 > >Yace failed high on 25.Bxc4 at depth 14(I may give it a long time to analyze) >Junior also liked 25.Bxc4 after finishing iteration 21 >I prefer b4 and after 25.Bxc4 bxc4 seems to be the correct move and not Nxc4 >that is suggested by yace and Junior. > >Junior 6 - Piket,J >[D]rr6/q2kbp2/bnp1p2p/pp1pP1pP/2nP2P1/P1P2N2/NP3P2/1KBRQB1R w - - 0 1 > >Analysis by Yace 0.99.56: > >25.Bg2 Rf8 26.Bh3 Bb7 27.Bg2 > = (0.22) Depth: -1 00:00:00 17kN >25.Be2 b4 26.cxb4 Kc8 > = (0.23) Depth: -1 00:00:00 17kN >25.Be2 Rf8 26.Nxg5 hxg5 27.Bxg5 > = (0.22) Depth: -1 00:00:00 17kN >25.Bg2 Rf8 26.Bh3 Bb7 27.Bg2 > = (0.22) Depth: -1 00:00:00 17kN >25.Bh3 Bb7 26.Bg2 Rc8 > = (0.23) Depth: -1 00:00:00 17kN >25.Bh3 Re8 26.Kc2 Bb7 27.Bg2 > = (0.23) Depth: -1 00:00:00 17kN >25.Kc2 Na4 26.b3 Re8 > = (0.24) Depth: -1 00:00:00 17kN >25.Kc2 Re8 26.Bg2 Bb7 27.Be3 > ² (0.30) Depth: -1 00:00:00 17kN >25.Kc2 Nc8 26.Bxc4 bxc4 27.Kd2 Rb3 28.Ke2 > = (0.25) Depth: -1 00:00:00 17kN >25.Kc2 Nc8 26.Bd3 b4 27.Bxc4 dxc4 28.Kd2 Ke8 > = (0.23) Depth: -1 00:00:01 224kN >25.Bg2 Rf8 26.Kc2 f5 27.exf6 Bxf6 28.Ne5+ Kd6 29.Nxc4+ Kd7 > = (0.24) Depth: -1 00:00:02 463kN >25.Bg2 Rf8 26.Kc2 Bb7 27.Nxg5 hxg5 28.Bxg5 > = (0.24) Depth: -1 00:00:02 463kN >25.Bd3 b4 26.cxb4 axb4 27.Nxb4 Bxb4 28.Qxb4 Kc7 > = (0.25) Depth: -1 00:00:03 679kN >25.Bd3 Bb7 26.Kc2 Re8 27.Bd2 c5 28.Be3 > = (0.25) Depth: -1 00:00:03 679kN >25.Bd3 Nc8 26.Nd2 Nxd2+ 27.Bxd2 b4 28.Bxa6 Qxa6 29.cxb4 Qd3+ 30.Ka1 Qxd4 > = (0.12) Depth: -1 00:00:07 1591kN >25.Bg2 Rf8 26.Kc2 b4 27.cxb4 axb4 28.Nxb4 Kc7 > = (0.13) Depth: -1 00:00:08 1591kN >25.Bg2 Rf8 26.Kc2 Bb7 27.Bh3 f6 28.Be3 b4 > = (0.21) Depth: -1 00:00:08 1842kN >25.Bg2 b4 26.cxb4 axb4 27.Nxb4 Nxa3+ 28.bxa3 Bxb4 29.Ka1 Bxe1 30.Nxe1 > = (-0.19) Depth: 9 00:00:16 3541kN >25.Bg2 b4 26.axb4 axb4 27.Nxb4 Bxb4 28.cxb4 Bb5 29.Kc2 Qa2 30.Nd2 > ³ (-0.48) Depth: 9 00:00:19 4030kN >25.Bd3 Nc8 > ³ (-0.47) Depth: 9 00:00:19 4335kN >25.Bd3 b4 26.axb4 Bb5 27.Bxc4 Nxc4 28.Kc2 axb4 29.Nxb4 Bxb4 30.cxb4 > ³ (-0.46) Depth: 9 00:00:28 6146kN >25.Kc2 Nc8 > ³ (-0.45) Depth: 9 00:00:28 6369kN >25.Kc2 Nc8 26.Kb1 b4 27.cxb4 axb4 28.a4 b3 29.Nc3 N8b6 > = (-0.02) Depth: 9 00:00:44 9628kN >25.Ka1 b4 26.cxb4 axb4 27.Nxb4 Bxb4 28.Qxb4 Nxe5 29.dxe5 Na4 > = (-0.01) Depth: 9 00:00:58 12580kN >25.Ka1 Nc8 26.Bxc4 bxc4 27.Qe2 Rb6 28.Rhg1 Rab8 29.Rge1 Qb7 > = (-0.01) Depth: 9 00:01:06 13944kN >25.Ka1 Ke8 26.Bg2 Nd7 27.Bd2 Nxd2 28.Qxd2 b4 29.cxb4 axb4 30.a4 > = (0.01) Depth: 10 00:01:29 17747kN >25.Ka1 Ke8 26.Nh2 Bc8 27.f4 b4 28.fxg5 bxa3 29.gxh6 axb2+ 30.Bxb2 Ba6 31.Nf3 > = (0.07) Depth: 11 00:03:21 40524kN >25.Ka1 Bc8 26.Bd3 b4 27.Bc2 bxa3 28.b3 Nb2 29.Bxb2 axb2+ 30.Kxb2 a4 31.b4 > = (0.02) Depth: 12 00:06:58 83248kN >25.Ka1 Bc8 26.Qe2 b4 27.Qc2 bxa3 28.b3 Nb2 29.Bxb2 axb2+ 30.Kxb2 a4 31.b4 a3+ > = (-0.24) Depth: 13 00:12:36 160318kN >25.Ka1 b4 26.cxb4 axb4 27.Nxb4 Nxb2 28.Nxa6 N6c4 29.Bxc4 dxc4 30.Nxb8+ Qxb8 >31.Bxb2 Bxa3 32.Qd2 Bxb2+ 33.Kb1 Bxd4+ 34.Qb4 Qxb4+ 35.Kc2 > ³ (-0.64) Depth: 14 00:32:54 416611kN >25.Ka1 b4 26.Nd2 Nxd2 27.Bxd2 bxa3 28.b3 Bxf1 29.Rxf1 a4 30.b4 Nc4 31.f4 > -+ (-1.42) Depth: 14 00:49:27 626942kN >25.Kc2 b4 26.cxb4 axb4 27.Nxb4 Bb5 28.Nd2 Bxb4 29.axb4 Nxd2 30.Bxb5 Nf3 31.Bxc6+ >Kxc6 32.Qc3+ Nc4 33.Qxf3 Nxb2 > -+ (-1.41) Depth: 14 00:52:51 676729kN >25.Kc2 b4 26.cxb4 axb4 27.Nxb4 Bb5 28.Rd3 Qa4+ 29.Kb1 Na5 30.Rd1 Bxf1 31.Rxf1 > µ (-0.94) Depth: 14 01:08:55 902613kN >25.Bxc4 bxc4 26.Ka1 Na4 27.Rd2 Qb6 28.Qd1 Bxa3 29.Qxa4 Bxb2+ 30.Bxb2 Qxd4 > µ (-0.93) Depth: 14 01:34:42 1255879kN >25.Bxc4 Nxc4 26.b4 axb4 27.cxb4 Bb7 28.Rd3 Rf8 29.Qe2 Qa4 30.Re1 Ke8 31.Nd2 f5 >32.f3 f4 > µ (-0.73) Depth: 14 01:43:17 1368155kN > >(Blass, Tel-aviv 01.12.2001) Yace can see a drop in score for Bxc4 at depth 17 unfortunately I am afraid it need more hours to finish depth 17 and I do not know if it is going to chnange it's mind to b4. Here is the rest of the analysis of yace: 25.Bxc4 Nxc4 26.b4 axb4 27.cxb4 Bc8 28.Rd3 Rb6 ³ (-0.68) Depth: 15 02:32:10 2025289kN 25.Bxc4 Nxc4 26.b4 axb4 27.cxb4 Bc8 28.Rd3 Rb6 29.Nd2 Ra6 30.Rhh3 f6 31.Nxc4 bxc4 32.Rd1 fxe5 33.Qxe5 Ra4 µ (-0.79) Depth: 16 04:49:25 4015514kN 25.Bxc4 bxc4 26.Ka1 Na4 27.Qe2 Rb3 28.Qc2 Rab8 29.Nd2 Rxb2 30.Bxb2 Rxb2 31.Qxa4 Bb5 32.Kxb2 Bxa4 33.Rb1 c5 34.Nf3 µ (-1.10) Depth: 17 14:50:38 3836760kN (Blass, Tel-aviv 01.12.2001)
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