Author: David Dahlem
Date: 16:05:44 08/28/04
Go up one level in this thread
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 Ruffian 2.1.0 doesn't see it either... Ruffian 2.1.0 WB2: 1 00:00 -0.69 1. ... h6 1 00:00 -0.80 1. ... h5 1 00:00 -0.98 1. ... d4 1 00:00 -1.64 1. ... Qh4+ 2.Kf1 2 00:00 -1.84 1. ... Qh4+ 2.Kf1 Qxe1+ 3.Kxe1 Kf6 3 00:00 -1.24 1. ... Qh4+ 2.Kf1 Qxe1+ 3.Kxe1 Kf6 4.Kf2 3 00:00 -1.40 1. ... Qg2+ 2.Ke3 Kf7 3.a4 Ke6 4 00:00 -2.09 1. ... Qg2+ 2.Ke3 Kf7 3.Qd2 Qxd2+ 4.Kxd2 f2 5.Ke2 5 00:00 -1.61 1. ... Qg2+ 2.Ke3 Kf7 3.Qd1 f2 4.Qh5+ Kg8 5.Qe8+ Kg7 6.Qe7+ Kg6 6 00:00 -2.05 1. ... Qg2+ 2.Ke3 Kf8 3.Qd2 Qxd2+ 4.Kxd2 d4 5.a4 f2 6.Ke2 7 00:00 -2.25 1. ... Qg2+ 2.Ke3 Kf8 3.Qd2 d4+ 4.Kd3 Qxd2+ 5.Kxd2 Ke7 6.a4 f2 7.Ke2 8 00:01 -2.15 1. ... Qg2+ 2.Ke3 Kf8 3.Qd2 Qg5+ 4.Kd3 Qg6+ 5.Ke3 Qh6+ 6.Kd3 Qa6+ 7.Kd4 Qa7+ 8.Ke5 f2 9.Qd3 9 00:02 -1.94 1. ... Qg2+ 2.Ke3 Kf8 3.Qd2 d4+ 4.Kd3 Qxd2+ 5.Kxd2 Ke7 6.a4 h5 7.b5 f2 8.Ke2 10 00:08 -1.96 1. ... Qg2+ 2.Ke3 Kf7 3.Qb1 Qe2+ 4.Kd4 Qe4+ 5.Qxe4 dxe4 6.Ke3 h5 7.a4 Ke6 8.b5 11 00:19 -2.03 1. ... Qg2+ 2.Ke3 Kf7 3.Qb1 Qe2+ 4.Kd4 Qe4+ 5.Qxe4 dxe4 6.Ke3 h5 7.b5 Ke6 8.b6 Kd6 12 00:49 -2.20 1. ... Qg2+ 2.Ke3 Kf7 3.Qb1 Qe2+ 4.Kd4 Ke6 5.Qxh7 Qd2+ 6.Kc5 Qc3+ 7.Kb5 Qxa3 8.Qg8+ Ke5 9.Qg3+ Ke4 10.Qf2 d4 13 01:46 -2.05 1. ... Qg2+ 2.Ke3 Kf7 3.Qb1 Qe2+ 4.Kd4 Ke6 5.Qxh7 Qd2+ 6.Kc5 Qc3+ 7.Kb5 Qxa3 8.Qg8+ Ke5 9.Qg3+ Ke4 10.Qh4+ Ke3 11.Qg5+ Kd3 12.Qxd5+ Ke3 14 02:18 -2.40 1. ... Qg2+ 14 03:49 -3.40 1. ... Qg2+ 2.Ke3 Kf7 3.Qd1 d4+ 4.Kd3 Qg3 5.Kc4 f2 6.Qh5+ Kg7 7.Qf5 Qc7+ 8.Kb5 Qb7+ 9.Ka5 Qa8+ 10.Kb5 Qe8+ 11.Ka5 Qe3 12.Ka4 d3 Regards Dave
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