Author: John Merlino
Date: 10:31:39 09/04/05
Go up one level in this thread
On September 04, 2005 at 13:04:53, Bahram Namjou wrote: >In this position, it is interesting to note that only chess tiger14 understand >white is going to mate very soon. This engine saw this in less than 3 seconds!!! >Newer engines such as shredder, toga, fruit, hiarcs, crafty all were not able to >see it is coming even after 5 minutes...I like to know the reason for this if >someone knows... >and how about other engines!... > >[D]8/8/8/3k2K1/2q3PP/8/p7/5Q2 w - - 0 90 > >Analysis by Chess Tiger 14.0: > >-+ (-6.69) 90.Qf5+ Kd4 91.Qf6+ Kd3 92.Kh5 Qb5+ 93.g5 Qb1 94.Qd6+ Kc2 95.Qc6+ >Kd2 96.Qd5+ Ke2 97.Qe6+ Kf2 98.Qf6+ Kg3 00:02:54 I'm not sure you're reading that correctly. Different engines report scores in different ways, but I'm pretty sure that in this situation (White to move), if the score is negative, then BLACK is winning. Here is what CM9_R1 says on a P4-2.4: Time Depth Score Positions Moves 0:00 1/3 0.47 2832 90.Qa1 Kd6 91.Qf6+ Qe6 0:00 1/3 0.53 5265 90.Qf7+ Kd4 91.Qf6+ Kd5 92.Qa1 Qa6 0:00 1/4 0.43 11304 90.Qf7+ Kd4 91.Qf6+ Ke4 92.Qf5+ Kd4 93.Qf4+ Kc3 94.Qe5+ Qd4 0:00 1/5 0.26 37702 90.Qf7+ Kc5 91.Qf8+ Kb5 92.Qb8+ Kc5 93.Qa7+ Kd6 94.Qb6+ Kd7 95.Qf6 0:00 1/6 0.00 116278 90.Qf7+ Kc5 91.Qf8+ Kd5 92.Qf5+ Kd6 93.Qf8+ Kd5 0:01 1/7 0.00 342311 90.Qf7+ Kc5 91.Qf2+ Kb4 92.Qb2+ Kc5 93.h5 Qd5+ 94.Kh6 Qe6+ 95.Kg5 Qd5+ 0:03 1/8 0.00 593948 90.Qf7+ Kc5 91.Qf2+ Kb4 92.Qb2+ Kc5 93.Qf2+ 0:08 1/9 -0.29 1730750 90.Qf7+ Kd4 91.Qf6+ Ke4 92.Qf5+ Ke3 93.Qe5+ Kd3 94.Kh5 Qg8 95.Qf5+ Kc3 96.Qf3+ Kd4 97.Qf4+ Kd5 98.Qf5+ Kc4 0:20 2/10 -0.13 4344204 90.Qf7+ Kd4 91.Qf6+ Ke4 92.Qf5+ Ke3 93.Qe5+ Kd3 94.Kh5 Qd4 95.Qb5+ Kc3 96.Qc6+ Kb2 97.Qb7+ Kc2 98.Qh7+ Kc3 0:36 3/11 -0.13 7791764 90.Qf7+ Kd4 91.Qf6+ Ke3 92.Qe5+ Kd3 93.Kh5 Qf7+ 94.Kg5 Qg8+ 95.Kh6 Qxg4 96.Qd5+ Kc3 97.Qxa2 Qxh4+ 98.Kg6 Qe4+ 99.Kg7 Qf4 1:20 4/12 -0.09 18200832 90.Qf7+ Kd4 91.Qf6+ Ke3 92.Qe5+ Kd3 93.Kh5 Qf7+ 94.Kg5 Qg8+ 95.Kh6 Qxg4 96.Qd5+ Kc3 97.Qxa2 Qxh4+ 98.Kg6 Qe4+ 99.Kf6 Qf4+ 100.Ke6 Kd4 3:01 5/13 -0.55 43010601 90.Qf7+ Kc5 91.Qf2+ Kb5 92.Qb2+ Ka6 93.Qf6+ Ka5 94.Qa1 Qb5+ 95.Kf4 Qb1 96.Qe5+ Ka4 97.Qe8+ Qb5 98.Qa8+ Kb3 99.Qf3+ Kb4 100.Qd1 Qb8+ 101.Kf5 Qf8+ 102.Ke4 jm
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