Author: Robert Hyatt
Date: 15:06:00 12/03/01
Go up one level in this thread
On December 03, 2001 at 14:54:32, Uri Blass wrote: >On December 03, 2001 at 10:31:45, Robert Hyatt wrote: > >>On December 03, 2001 at 07:39:53, Uri Blass wrote: >> >>>Here is some analysis(I also post previous analysis before Qe3 when it could not >>>see the draw even after finishing iteration 18): >> >>The question is this: Does it see where black can _force_ the draw? (I >>seriously doubt it as it is 60 plies deep) or does it see a position where >>it thinks white is worse and would therefore agree to a draw, when white is >>really not worse? IE I wouldn't trust a "material-only" score under any >>circumstances, since so many scores are 0.00 when in fact one side is winning >>easily. > >I gave it to analyze for more time and it does not keep the 0.00 score but the >score is still better than the alternative and is only 1 pawn for white but it >is still better than 2 pawns for white that is the result of the alternative > However that isn't convincing. Material-only might arrive at a position with white having pawns on e7 and d7. And conclude that black is better. Because the positional score for those two pawns is missing... >[D]1r6/5kp1/R1Qb1p1p/1p1PpP2/1Pp1B3/2P1q2P/6P1/5K2 w - - 0 1 > >Analysis by Yace 0.99.56: > >46.Qxd6 Qxe4 > +- (1.60) Depth: 1 00:00:00 >46.Qxd6 Qxe4 > +- (1.60) Depth: 2 00:00:00 >46.Qxd6 Qxe4 47.Ra7+ Rb7 48.Rxb7+ Ke8 > +- (2.00) Depth: 3 00:00:00 >46.Qxd6 Rg8 47.Qe6+ Kf8 > +- (3.50) Depth: 3 00:00:00 >46.Qxd6 Re8 47.Bf3 Qxc3 > +- (2.70) Depth: 4 00:00:00 >46.Qxd6 Re8 47.Bf3 Qc1+ 48.Kf2 Qxc3 > +- (2.70) Depth: 5 00:00:00 22kN >46.Qxd6 Re8 47.Bf3 Qc1+ 48.Kf2 Qd2+ 49.Be2 Qf4+ 50.Kg1 > +- (2.70) Depth: 6 00:00:00 61kN >46.Qxd6 Re8 47.Bf3 Qc1+ 48.Kf2 Qd2+ 49.Be2 Qf4+ 50.Ke1 Qxf5 51.Kd1 > +- (2.70) Depth: 7 00:00:00 186kN >46.Qxd6 Re8 47.Bf3 Qc1+ 48.Kf2 Qd2+ 49.Be2 Qf4+ 50.Kg1 Qe3+ 51.Kh2 Qxe2 52.Qxe5 > +- (2.30) Depth: 8 00:00:00 381kN >46.Qxd6 Re8 47.Bf3 Qc1+ 48.Kf2 Qd2+ 49.Be2 Qf4+ 50.Ke1 Qc1+ 51.Bd1 Qxc3+ 52.Kf2 >Qd4+ 53.Ke2 Qe4+ 54.Kf1 > +- (1.90) Depth: 8 00:00:01 381kN >46.Qd7+ Be7 47.d6 Qf4+ 48.Kg1 Qe3+ 49.Kh2 Qf4+ 50.g3 Qxf5 51.Bxf5 Kg8 > +- (1.91) Depth: 8 00:00:01 577kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Qe6+ Kh7 49.Bf3 Qxc3 50.Qe7 Qd3+ 51.Kf2 > +- (2.70) Depth: 8 00:00:02 577kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Qe6+ Kh7 49.Qe7 Rg8 50.Bf3 Qc1+ 51.Kf2 Qc2+ 52.Kg1 >Qxf5 > +- (2.70) Depth: 9 00:00:03 1558kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Qe6+ Kh7 49.Qe7 Rg8 50.Bf3 Qc1+ 51.Kf2 Qc2+ 52.Kg1 >Qxf5 53.Kh2 > +- (2.70) Depth: 10 00:00:09 4202kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Bf3 Qxc3 49.Qe6+ Kh7 50.Qe7 Qd3+ 51.Kf2 Kg8 52.Ra7 g6 > +- (2.70) Depth: 11 00:00:27 13614kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Bf3 Qxc3 49.Qe6+ Kh7 50.Qe7 Qd3+ 51.Kf2 Kg8 52.Ra7 >Qd2+ 53.Kg1 Qc1+ 54.Kh2 Qf4+ 55.g3 > +- (2.70) Depth: 12 00:00:58 29542kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Kg1 Qc1+ 51.Kh2 Qf4+ 52.g3 >Qxf3 53.Qxf6 > +- (2.30) Depth: 13 00:02:22 73778kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Qe6+ Kh7 49.Qe7 Qxe4 50.Rxf6 Rxf6 51.Kf2 > ± (1.30) Depth: 13 00:02:56 91040kN >46.Qd7+ Kg8 47.Qxd6 Rf8 48.Qe6+ Kh7 49.Bf3 Qc1+ 50.Ke2 Qb2+ 51.Kd1 Qb1+ 52.Kd2 >Qb2+ 53.Ke1 Qxc3+ 54.Kf2 Qd2+ 55.Kg1 Qc1+ 56.Kh2 Qf4+ 57.Kh1 Qc1+ 58.Kh2 Qf4+ >59.Kh1 Qc1+ 60.Kh2 > = (0.00) Depth: 13 00:03:54 120417kN >46.Qxd6 Re8 47.h4 Qc1+ 48.Ke2 Qb2+ 49.Kd1 Qb3+ 50.Kd2 Qb2+ 51.Bc2 Rd8 52.Qxd8 >Qxb4 > = (0.01) Depth: 13 00:05:56 182067kN >46.Qxd6 Re8 47.h4 Re7 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Kg3 Qe1+ 51.Kg4 h5+ 52.Kxh5 Qg3 >53.Be4 Qe1 54.Bc2 Qe2+ 55.g4 Qxc2 > ± (0.80) Depth: 13 00:07:06 217175kN >46.Qxd6 Re8 47.h4 Re7 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Kg3 Qe1+ 51.Kg4 h5+ 52.Kxh5 Qg3 >53.Qe6+ Rxe6 54.dxe6+ Kf8 55.Ra8+ Ke7 56.Ra7+ Ke8 57.Bc6+ Kf8 58.e7+ Kg8 59.e8Q+ >Kh7 > ± (1.20) Depth: 14 00:16:57 511832kN >46.Qxd6 Re8 47.h4 h5 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Be2 Qf4+ 51.Ke1 Qc1+ 52.Bd1 >Qxc3+ 53.Kf1 Qc1 54.Ra7+ > ± (1.20) Depth: 14 00:18:50 567641kN >46.Qxd6 Re8 47.h4 h5 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Be2 Qf4+ 51.Ke1 Qc1+ 52.Bd1 >Qxc3+ 53.Kf1 Qc1 54.Ra7+ Kg8 55.Ke2 Qb2+ 56.Ke3 Qc1+ 57.Kf3 Qxd1+ 58.Kg3 > ± (0.80) Depth: 15 00:38:29 1120485kN >46.Qxd6 Re8 47.h4 h5 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Be2 Qf4+ 51.Ke1 Qc1+ 52.Bd1 >Qxc3+ 53.Kf1 Qc1 54.Ra7+ Kg8 55.Ke2 Qb2+ 56.Ke1 Qc3+ 57.Kf1 Qc1 58.Ke2 Qb2+ >59.Ke1 Qc3+ 60.Kf1 Qc1 > = (0.00) Depth: 15 00:48:38 1415959kN >46.Qxd6 Re8 47.h4 h5 48.Bf3 Qc1+ 49.Kf2 Qd2+ 50.Be2 Qf4+ 51.Kg1 Qc1+ 52.Kh2 Qxc3 > ² (0.40) Depth: 16 02:13:13 3876002kN >46.Qxd6 Re8 47.h4 Qxe4 48.Ra7+ Kg8 49.Qd7 Qd3+ 50.Kg1 Qe3+ 51.Kh2 Re7 52.Qc8+ >Kh7 53.Rxe7 Qf4+ 54.Kh3 Qe3+ 55.g3 Qe1 56.Rxg7+ Kxg7 57.Qd7+ > ± (0.80) Depth: 16 02:38:20 335952kN >46.Qxd6 Re8 47.h4 Qxe4 48.Ra7+ Kg8 49.Qd7 Qd3+ 50.Kg1 Re7 51.Qc8+ Kh7 52.Rxe7 >Qxc3 53.Kh2 Qd4 54.Rxg7+ Kxg7 55.Qd7+ Kh8 56.Qe8+ Kg7 57.Qg6+ Kf8 58.Qxh6+ Ke7 >59.Qg7+ Kd6 60.Qxf6+ Kxd5 > ± (0.80) Depth: 17 05:07:21 568758kN > >(Blass, Tel-aviv 03.12.2001) > >Uri
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