Author: Vincent Diepeveen
Date: 04:31:42 04/26/01
Go up one level in this thread
On April 26, 2001 at 02:37:39, Uri Blass wrote: >game 1: > >In this position >R7/3r2k1/4b1p1/P2N3p/5P1P/3K1BP1/5b2/8 w - - 0 1 > >Deep Fritz played 56.Kc4 0.47/15 Rc7 57.Kb4 0.28/16 Rd7 and the following >position happened > > >[D]R7/3r2k1/4b1p1/P2N3p/1K3P1P/5BP1/5b2/8 w - - 0 1 > >Deep Fritz played 58.Nb6 0.09/16 time when it pondered 8:57 >and used 1007 knodes per second. > >I believe that it is a mistake in the time allocation of Deep Fritz. >It should use more time for 58.Nb6 and the time of pondering was not enough. > >The following facts are obvious: > >1)Deep Fritz had a possible move that force repetition(58.Kc4) >2)The score of Deep Fritz dropped and was only slightly above 0 > >I believe that programs should use more time in these situations. >The time control was 40/90 and it means that Deep Fritz probably had more than >45 minutes to calculate and in this situation that is not common I would prefer >to use at least half of them. Oh this is not a matter of time division, i think Fritz time division is more than ok. It's about evaluation here. here what diep produces: Proces 1 starting initialisation! Proces 1 starting SearchSMP! Took 0.09 seconds to start all 1 other processes Process 1: engineflags=0 msk=1 process 0: engineflags = 0 denktime=10000000 maxtime=10000000 00:00 0 0 4 (0) 1 0.18 Nd5-c3 Bf2xg3 00:00 0 0 28 (0) 1 2.72 Nd5-b6 Rd7-d4 Kb4-c3 00:00 0 0 184 (0) 2 2.24 Nd5-b6 Rd7-d2 00:00 4 13 1175 (76) 3 2.20 Nd5-b6 Rd7-d3 Ra8-a7 Kg7-f6 00:00 18 88 4560 (623) 4 0.99 Nd5-b6 Rd7-e7 Ra8-d8 Bf2xg3 00:00 78 347 20895 (5867) 5 0.49 Nd5-b6 Rd7-d3 f4-f5 Be6xf5 Ra8-a7 Kg7-f6 00:01 194 747 55423 (6244) 6 0.49 Nd5-b6 Rd7-d3 f4-f5 Be6xf5 Ra8-a7 Kg7-f6 00:02 487 1838 127947 (17510) 7 0.08 Nd5-b6 Rd7-d3 Bf3-e2 Rd3-b3 Kb4-a4 Bf2xg3 R a8-a7 Kg7-f6 Be2-a6 00:07 2506 7515 520280 (153827) 8 -0.13 Nd5-b6 Rd7-d3 f4-f5 Be6xf5 Bf3-d5 Bf2xg3 Ra8-a7 Kg7-f6 Ra7-f7 Kf6-e5 Bd5-c4 ++ b4-c4 00:14 5160 16351 1172892 (384590) 8 0.00 Kb4-c4 Bf2xg3 a5-a6 Bg3-f2 Ra8-e8 Be6-f 7 Re8-e2 Bf2xh4 Kc4-c5 00:16 6300 19657 1400457 (394659) 9 0.00 Kb4-c4 Rd7-c7 Kc4-d3 Rc7-d7 Kd3-c4 00:23 9209 29056 2089500 (433951) 10 0.00 Kb4-c4 Rd7-c7 Kc4-d3 Rc7-d7 Kd3-c4 00:41 17594 55311 3811659 (643340) 11 0.00 Kb4-c4 Rd7-c7 Kc4-d3 Rc7-d7 Kd3-c4 01:23 37046 123881 7986047 (1071901) 12 0.00 Kb4-c4 Rd7-c7 Kc4-d3 Rc7-d7 Kd3-c4 >After Rd3 it played 59.Bc6 and the score dropped to -0.06 and after the expected >move Rb3+ the score dropped again to -0.53 > > > > > > >game 3: > > >[D]8/q3kp2/3p1p2/r3pP2/1p2P1PP/8/P1PQNb1R/1K6 w - - 0 1 > >It seems that Nc1 is the only move for white not to lose material > >Deep Fritz played Qxb4 with 0.00 evaluation(it used 163 seconds and searahed 906 >knodes per second). >Only after Rxa2 the score dropped to -0.34 >How much time do chess programs need to find Nc1? >Does it save white? No way both moves lose. Mistake was long before that: (please note that my PVs are quite some longer as those of DB and i only get'em out of hashtable no other tricks...): Process 1: engineflags=0 msk=1 process 0: engineflags = 0 denktime=10000000 maxtime=10000000 00:00 0 0 3 (0) 1 2.58 Qd2xb4 00:00 0 0 79 (0) 2 0.04 Qd2xb4 Ra5xa2 ++ h2-f2 00:00 0 0 147 (0) 2 0.27 Rh2xf2 Qa7xf2 Qd2xb4 ++ c2-c3 00:00 0 1 355 (0) 2 1.11 c2-c3 Bf2-e3 ++ c2-c4 00:00 0 2 437 (0) 2 1.14 c2-c4 Qa7-c5 ++ e2-c1 00:00 0 2 584 (0) 2 1.60 Ne2-c1 Bf2-c5 ++ e2-c3 00:00 0 2 1176 (0) 2 2.01 Ne2-c3 Bf2-g3 Nc3-d5 Ra5xd5 e4xd5 Bg3xh2 Qd2xh2 00:00 0 16 1478 (0) 3 2.01 Ne2-c3 Bf2-g3 Nc3-d5 Ra5xd5 e4xd5 Bg3xh2 Qd2xh2 00:00 14 38 4707 (0) 4 0.22 Ne2-c3 b4xc3 Qd2xf2 Qa7-b7 Kb1-c1 Qb7xe4 ++ e2-c1 00:00 18 51 6326 (157) 4 1.49 Ne2-c1 Bf2-c5 h4-h5 Qa7-a8 ++ e2-f4 00:00 43 139 14988 (3025) 4 1.76 Ne2-f4 e5xf4 Rh2xf2 Qa7-e3 00:00 269 416 36393 (12097) 5 -5.12 Ne2-f4 Ra5xa2 Nf4-g6 f7xg6 Kb1-c1 ++ e2-c1 00:00 304 494 41635 (13955) 5 1.36 Ne2-c1 Bf2-e3 Qd2-e1 Qa7-d4 Nc1-b3 ++ c2-c3 00:00 361 745 57100 (19409) 5 1.44 c2-c3 Qa7-b7 Kb1-a1 b4-b3 Ne2-c1 00:01 649 1784 127811 (39985) 6 -0.77 c2-c3 b4-b3 Ne2-c1 Bf2-e3 Qd2-b2 Be3xc1 Qb 2xc1 Ra5xa2 ++ e2-c1 00:02 712 2027 143492 (44473) 6 1.07 Ne2-c1 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Ra4xe4 00:03 951 3005 212287 (52703) 7 1.16 Ne2-c1 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Be3-f4 R h2-g2 Ra4xe4 00:06 2157 6945 471238 (107322) 8 0.90 Ne2-c1 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Ra4xe4 Rh2-e2 Qa7-d4 00:15 4973 16977 1184562 (207372) 9 0.84 Ne2-c1 Bf2-e3 Qd2-e1 Be3xc1 Kb1xc1 Qa7- d4 Kc1-b1 d6-d5 e4xd5 Qd4xg4 00:36 12229 43404 2788547 (318250) 10 0.16 Ne2-c1 Bf2-e3 Qd2-e1 Be3xc1 Kb1xc1 Ra 5xa2 Qe1-f2 Qa7-a3 Kc1-d1 Ra2-a1 Kd1-e2 ++ d2-b4 02:31 74011 183454 11973211 (3818923) 10 0.16 Qd2xb4 Ra5xa2 Rh2xf2 Ra2-a1 Kb1-b2 Ra1-h1 Ne2-c3 Qa7-a1 Kb2-b3 Rh1-h3 Rf2-d2 Ke7-f8 h4-h5 Kf8-g7 Rd2-d3 Rh3-h4 Rd3 xd6 Qa1-a5 03:50 105601 273157 18086194 (4524935) 11 0.16 Qd2xb4 Ra5xa2 Rh2xf2 Ra2-a1 Kb1-b 2 Ra1-h1 Ne2-c3 Qa7-a1 Kb2-b3 Rh1-h3 Rf2-d2 Ke7-f8 h4-h5 Kf8-g7 Rd2-d3 Rh3-h4 Rd 3xd6 Qa1-a5 06:50 173723 489663 32146193 (7601206) 12 -0.13 Qd2xb4 Bf2-c5 Qb4-b3 Ra5-a3 Qb3- b2 Ra3-a6 Rh2-h3 Bc5-a3 Rh3xa3 Ra6xa3 c2-c3 Ra3-a4 c3-c4 Qa7-f2 Qb2-b7 Ke7-f8 25:08 620150 1680549 117267354 (27993369) 13 -0.64 Qd2xb4 Ra5xa2 Rh2xf2 Ra2-a4 Q b4-b3 Ra4-a1 Kb1-b2 Ra1-h1 Qb3-g3 Qa7-a1 Kb2-b3 Rh1-b1 Kb3-c4 Qa1-a4 Kc4-c3 Qa4- b4 Kc3-d3 Rb1-d1 Kd3-e3 Qb4-a3 c2-c3 Qa3-c5 Ke3-f3 Rd1-d3 Kf3-g2 Rd3xg3 Ne2xg3 Q c5xc3 Now i play Nc1 and get a huge score for black real soon: Process 1: engineflags=0 msk=2 process 0: engineflags = 0 denktime=10000000 maxtime=10000000 00:00 0 0 5 (0) 1 -4.31 Bf2xh4 Rh2xh4 b4-b3 a2xb3 Ra5-a1 Kb1-b2 Qa7-a3 Kb2-c3 Ra 1xc1 Kc3-d3 Qa3-b2 Qd2-c3 Rc1-d1 00:00 0 0 7 (0) 1 -0.00 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg4 Qd2 -g5 f6xg5 Rh2-g2 00:00 0 0 99 (0) 2 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg4 Qd2 -g5 f6xg5 Rh2-g2 00:00 0 3 332 (87) 3 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc1-b 2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg4 Q d2-g5 f6xg5 Rh2-g2 00:00 1 12 740 (269) 4 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc1 -b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg4 Qd2-g5 f6xg5 Rh2-g2 00:00 2 23 1190 (271) 5 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc 1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg 4 Qd2-g5 f6xg5 Rh2-g2 00:00 4 54 2800 (504) 6 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc 1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4xg 4 Qd2-g5 f6xg5 Rh2-g2 00:00 6 102 5539 (621) 7 0.01 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 K c1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe4x g4 Qd2-g5 f6xg5 Rh2-g2 00:00 14 215 11421 (765) 8 0.21 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g1 Kc1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Qe 4xg4 Qd2-g5 f6xg5 Rh2-g2 00:00 185 610 40232 (963) 9 0.46 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-c3 Qa7-g 1 Kc1-b2 Ra4-a7 Qc3-d2 Ra7-b7 Kb2-c3 Qg1-c5 Kc3-d3 Qc5-d4 Kd3-e2 Qd4xe4 Ke2-f2 Q e4xg4 Qd2-g5 f6xg5 Rh2-g2 00:06 3488 8162 523023 (13975) 10 0.63 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb4-b5 Ra4xa2 Rh2-g2 Ra2-a1 Kc1-d2 Qa7-d4 Qb5-d3 Qd4-b4 Kd2-e2 Qb4-e1 Ke2-f3 Qe1xh4 Rg 2-d2 Qh4-h3 00:22 11954 31506 1898502 (320416) 11 0.90 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb 4-b3 Ra4xa2 Rh2-e2 Ra2-a1 Kc1-d2 Qa7-d4 Qb3-d3 Qd4-g1 Qd3-c4 Ra1-d1 Kd2-c3 Qg1-g 3 Kc3-b2 Qg3xh4 Qc4-c7 Ke7-f8 Qc7-d8 Kf8-g7 c2-c4 01:08 34705 98425 5867751 (878582) 12 0.79 Bf2-e3 Qd2xb4 Be3xc1 Kb1xc1 Ra5-a4 Qb 4-d2 Ra4xa2 Qd2-f2 Ra2-a1 Kc1-d2 Qa7-a5 Kd2-e2 Qa5-b4 Qf2-g2 Ra1-e1 Ke2-f2 Re1xe 4 h4-h5 Qb4-d2 08:13 257625 675935 41239864 (6472650) 13 2.46 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Be3xc 1 Kb1xc1 Ra4xa2 Rh2-g2 Ra2-a1 Kc1-b2 Ra1-h1 Qb3-a2 Qa7-b6 Qa2-b3 Qb6-d4 c2-c3 Qd 4xe4 Qb3-c2 Qe4-e1 Qc2-e2 Qe1-b1 Kb2-a3 Rh1xh4 13:31 407236 1126015 66793017 (6957736) 14 2.46 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Be3x c1 Kb1xc1 Ra4xa2 Rh2-g2 Ra2-a1 Kc1-b2 Ra1-h1 Qb3-a2 Qa7-b6 Qa2-b3 Qb6-d4 c2-c3 Q d4xe4 Qb3-c2 Qe4-e1 Qc2-e2 30:05 971328 2482209 147440988 (10519238) 15 2.46 Bf2-e3 Qd2xb4 Ra5-a4 Qb4-b3 Be 3xc1 Kb1xc1 Ra4xa2 Rh2-g2 Ra2-a1 Kc1-b2 Ra1-h1 Qb3-a2 Qa7-b6 Qa2-b3 Qb6-d4 c2-c3 Qd4xe4 Qb3-c2 Qe4-e1 Qc2-e2 >Uri Best Regards, Vincent
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