Author: David Dahlem
Date: 16:11:42 08/28/04
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On August 28, 2004 at 18:40:43, martin fierz wrote: >aloha! > >after all the cloning talk, here's something to test your favorite engine with: >i played a weakish IM today and got the following position after 56...Qg6+ >57.Kf2: > >[D] 8/6kp/8/3p4/1P4q1/P4p2/5K2/4Q3 b - - 0 57 > >it took me a couple of seconds to see that after 57...Qh4+ 58. Kf1 Qxe1+ 59. >Kxe1 Kf6 black is completely winning due to the floating square (it's nice to >see that reading dvoretzky is some good!) and so i played that and won :-) > >interestingly, when i entered this game in chessbase running fritz7 in the >background, fritz didn't seem to see this at all within a minute or so. so >question to all: how long does your favorite engine need to see the line ...Qh4+ >Kf1 Qxe1+ with a HUGE plus score (i.e. +9 or so - that is what my assessment of >the position was after a couple of seconds...)? > >i don't want to claim that this is the only win, but it is by far the easiest >one, and fritz 7 misses it completely. > >cheers > martin ProDeo sees a slightly different line, with a gradually increasing score ... ProDeo UCI UCI1: 1 00:00 -0.74 1. ... Kf6 1 00:00 -0.82 1. ... d4 1 00:00 -0.92 1. ... Qf4 1 00:00 -1.50 1. ... Qg2+ 2.Ke3 1 00:00 -1.87 1. ... Qh4+ 2.Kf1 Qxe1+ 3.Kxe1 2 00:00 -1.87 1. ... Qh4+ 2.Kf1 Qxe1+ 3.Kxe1 3 00:00 -1.87 1. ... Qh4+ 2.Kf1 Qxe1+ 3.Kxe1 4 00:00 -1.47 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kg8 5 00:00 -1.56 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 d4+ 5.Kxd4 f2 6.Qe5+ Kg6 7.Qe6+ Kg5 6 00:00 -1.28 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 d4+ 5.Kxd4 f2 6.Qe5+ Kh6 7.Qf6+ Qg6 8.Qf4+ Kg7 9.Kc5 Qc2+ 7 00:01 -1.57 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kf7 5.Qb1 Qe2+ 6.Kd4 f2 7.Qxh7+ Kf6 8.Qh6+ Kf5 8 00:02 -1.52 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kf7 5.Qd1 d4+ 6.Kxd4 f2 7.Qh5+ Qg6 8.Qd5+ Qe6 9.Qb7+ Ke8 10.Qb8+ Kd7 9 00:06 -2.40 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kf8 5.Qd2 d4+ 6.Kd3 Qxd2+ 7.Kxd2 10 00:14 -2.36 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kf8 5.Qb1 Qe2+ 6.Kd4 f2 7.Qf5+ Ke8 8.Qc8+ Ke7 9.Qc5+ Kf6 10.Qf8+ Kg5 11.Qd8+ Kg4 11 00:36 -2.51 1. ... Qh4+ 2.Kf1 Qh3+ 3.Kf2 Qg2+ 4.Ke3 Kf8 5.Qd2 d4+ 6.Kd3 f2 7.Qh6+ Ke8 8.Qe6+ Kd8 9.Qd6+ Kc8 10.Qc5+ Kb7 11.Qb5+ Kc7 12.Qe5+ Kc6 12 02:34 -2.76 1. ... Qh4+ 2.Kf1 Qh1+ 3.Kf2 Qg2+ 4.Ke3 Kf8 5.Kd4 Qb2+ 6.Kxd5 Qg2 7.Kd4 f2 8.Qa1 Regards Dave
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