Author: Eelco de Groot
Date: 10:10:02 08/03/03
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A faster computer or much longer timecontrol, or another searchmethod maybe would have helped a little to see Black's advantage too? I picked the position after 47...,Qd2 to see if some Rebel personalities can see the danger. Only after 15 minutes BETA_Z7G sees that Bf1 is not very promising anymore, -2.36. I did not let it run much longer, about four moves of that ply which did not get a higher score. I think BETA9 is not doing very well here either, at least not on my computer, it takes ages to complete evaluation of the first move f6+ of iteration 15. After 14 hours I pulled out the plug, iteration 13 gave its result for f6+ of -1,46 after about 2 1/2 hours (28Mb TT, Celeron 500MHz). As this maybe has something to do with (check?) extensions in this position I thought I'd mention it. Also BETA9 is different from BETA_Z7g here, so maybe there is some effect of Singular Extensions in these complicated positions with heavy pieces, passed pawns and delaying checks, because of forced moves? I don't really know. This game I think is about pattern recognition where humans are just better than most programs seeing clearly that a pawn can't be stopped in any way although there are still heavy pieces around. Position after 47. ..,Qd2. How long to see that the position is bad for White. [D]1r6/4kp2/8/5P2/1p5R/1P2p3/P2q2BP/6RK w - - 4 1 BETA_Z7G 00:00:00.4 0,15 1 12 Rh7 Qxa2 00:00:00.5 0,40 1 67 Rc4 Qxa2 00:00:00.5 0,48 1 98 a4 00:00:00.5 -1,25 2 231 a4 bxa3ep 00:00:00.5 0,13 2 768 Rc4 e2 Rcc1 00:00:00.7 -0,05 3 2655 Rc4 e2 Rc7+ Kd6 Rc6+ 00:00:00.7 0,02 3 4199 Bf3 Qf2 Rf4 00:00:00.7 0,16 3 5156 Re4+ Kf6 Bh3 00:00:00.8 -0,11 4 6995 Re4+ Kf6 Rc4 Kxf5 00:00:00.8 -0,03 4 9287 Bf3 Qf2 Re4+ Kd6 Rd1+ 00:00:01.0 0,06 5 21520 Bf3 Qf2 Re4+ Kd6 Bg2 00:00:01.3 -0,39 6 49830 Bf3 Qf2 Rf4 Rh8 Rg2 Qf1+ Rg1 00:00:01.4 -0,22 6 77807 Re4+ Kf6 h4 Rg8 Rf4 Qxa2 00:00:02.4 -0,34 7 263136 Re4+ Kf6 Bf3 Qf2 Bg4 Rh8 Rg2 Qf1+ 00:00:04.0 -0,26 7 599872 f6+ Kxf6 Rf4+ Ke7 Rgf1 Rf8 Re4+ Kd7 00:00:04.5 -0,15 7 708004 Bf1 Kd6 Bc4 Ra8 Rh6+ Kc7 00:00:06.0 -0,31 8 1029754 Bf1 Kf6 Bc4 Rc8 Rh6+ 00:00:13.6 -0,69 9 2738723 Bf1 Kf6 Rg2 Qd1 Kg1 Kxf5 Rc4 00:00:32.5 -0,63 9 7006373 Re4+ Kf6 Rc4 e2 Rcc1 Re8 00:00:34.8 -0,34 9 7539921 Bf3 Rc8 Re4+ Kf6 Reg4 Qxa2 Rxb4 Qf2 00:00:51.2 -1,15 10 11418968 Bf3 Rc8 Rhg4 Rc1 Rxc1 Qxc1+ 00:01:03.4 -0,92 10 14306832 Re4+ Kf6 Rc4 e2 Rcc1 Re8 00:01:12.0 -0,41 10 16355680 Bf1 Kf6 Bc4 Ke5 Rh7 Ra8 Bxf7 Rxa2 00:02:09.8 -0,68 11 30009589 Bf1 Kf6 Rh6+ Ke5 Rg2 Qd1 00:04:25.1 -0,80 12 62289403 Bf1 Kf6 Rg2 Qd1 Kg1 Rc8 00:15:02.2 -2,36 13 214935337 Bf1 Kf6 Rg2 Qd1 Rh6+ Kxf5 Rg1 e2 BETA9 00:00:00.4 -0,22 1 12 Rh7 Qxa2 00:00:00.4 -0,20 1 32 Rh6 Qxa2 00:00:00.4 0,07 1 72 Rc4 Qxa2 00:00:00.4 0,14 1 111 a4 00:00:00.4 -1,62 2 376 a4 bxa3ep 00:00:00.4 -0,23 2 947 Rc4 Rh8 00:00:00.6 -0,41 3 2931 Rc4 e2 Rc7+ Kd6 Rc6+ 00:00:00.6 -0,34 3 4565 Bf3 Qf2 Rf4 Kf6 h4 00:00:00.8 -0,38 4 9696 Bf3 Qf2 Re4+ Kd6 Rd1+ 00:00:01.0 -0,36 5 24142 Bf3 Qf2 Re4+ Kf6 Bg4 Rg8 Rd1 Rxg4 00:00:01.3 -0,51 6 59052 Bf3 Qf2 Re4+ Kf8 Bg2 Ra8 00:00:01.9 -0,70 7 166793 Bf3 Qf2 Re4+ Kf6 Bg4 Rh8 Rg2 Qf1+ 00:00:04.1 -0,73 8 623891 Bf3 Qf2 Re4+ Kf6 Bg4 Rh8 h3 Ra8 00:00:08.1 -0,80 9 1530446 Bf3 Qf2 Re4+ Kf8 Bd1 Rd8 Reg4 e2 00:00:16.1 -0,75 9 3356544 Bf1 Kd6 00:00:24.3 -0,91 10 5262158 Bf1 Kd6 00:01:07.9 -1,00 11 15521542 Bf1 Kd6 00:02:28.5 -1,48 12 34718733 Bf1 Kd6 00:12:26.9 -1,46 12 176685518 f6+ Kxf6 Rf4+ Ke6 Bf3 f5 Rg2 Qc1+ 00:31:36.5 -1,46 13 454666870 f6+ Kxf6 Rf4+ Ke6 02:36:31.2 -1,46 14 -2019162818 f6+ Kxf6 Rf4+ Ke6 Re4+ Kd7 Rf1 I assume now a fail low but I can't tell exactly, the nodecounter only gives information when there is a new result, there is still a kernel using 100% of the processortime, so I assume Rebel is still silently calculating its demise.. For completeness sake Q5T personality, score about -2 quickly but that does not say much about winning or losing position as scores for this personality can be very optimistic or pessimistic. Y5B/Q5T 00:00:00.9 -0,87 1 50 Rh7 00:00:00.9 -0,53 1 95 Rc4 00:00:00.9 -0,19 1 132 a4 00:00:01.0 -2,88 2 290 a4 bxa3ep Re4+ Kd7 00:00:01.0 -1,37 2 703 Rc4 e2 Rc7+ Kd6 00:00:01.2 -1,37 3 24227 Rc4 e2 Rc7+ Kd6 Rc6+ Ke7 Rc7+ Kd6 00:00:01.5 -1,35 4 69696 Rc4 Rh8 Rgc1 Kd6 00:00:01.9 -1,00 5 140757 Rc4 e2 Rcc1 Rc8 Rce1 Rc2 Bf3 Qe3 00:00:02.6 -1,50 6 267439 Rc4 Rg8 f6+ Kxf6 Rf4+ Ke7 h4 00:00:06.1 -2,21 7 1102544 Rc4 Rg8 f6+ Kd8 a4 bxa3ep b4 00:00:39.7 -2,12 7 9367567 f6+ Kxf6 Rf4+ Ke6 Bf3 Rc8 00:00:48.9 -1,95 7 11629964 Re4+ Kf6 Rc4 e2 Rc6+ 00:00:49.2 -1,83 7 11695613 Bf3 Qf2 f6+ Kxf6 Rf4+ Ke7 Rg2 Qe1+ 00:00:49.7 -1,83 7 11790647 Bf1 00:00:50.2 -1,33 7 11907911 Bf1 Kd6 00:00:51.0 -1,40 8 12093286 Bf1 Kd6 00:01:10.5 -1,50 9 16882609 Bf1 Kf6 Bc4 Ke5 Rh7 e2 00:02:34.1 -1,71 10 37875806 Bf1 Kd6 00:06:47.9 -1,99 11 101849529 Bf1 Rc8 Rhg4 Rc1 R4g2 Rxf1 Rxf1
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