Author: leonid
Date: 13:24:20 08/18/01
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On August 18, 2001 at 14:00:27, Heiner Marxen wrote: >On August 18, 2001 at 13:32:28, leonid wrote: > >>>>>>>>>>http://www.icdchess.com/forums/1/message.shtml?183489 >>>>>>>[D]B2B1qr1/N2Qb2q/Q2Rq3/Q2Q1q2/Q2Q2q1/Q2Q3n/R2Qq2k/1KN2rq1 w - - >> >> >>Is there somewhere bug in my program? This is what I ask me after finding mate >>during the night for above position. Mate found in 9 moves: D4-G1. >> >>Reason for doubt is the fact that when I tried to confirme the mate by executing >>the white move and seeing the black responses (they are four), it was not easy. >>After three black responses by king, knight and queen, white found quickly mate >>in 8. When I executed last black move by rook, after waiting for good 2 hours >>response was still not there. It could be that during my last two "improvement" >>some bug went into the code. Please, verify if found white move really lead to >>mate in 9. >> >>Thanks in advance, >>Leonid. > >Hello Leonid, >D4-G1 is ok, according to Chest. See my response: >http://www.icdchess.com/forums/1/message.shtml?184076 Hello, Heiner! Thanks for your response. I was already really worried and was almost sure that some bug is in the code. Now I see that explosion in the branching factor comes after position created by white move D4-G2 and black response F1-G1. When I looked white side branching factor, that started with innocent 5.8 between four and fifth move, between 7 and 8 it exploded. Move 7 took 5 min and 25 sec, but for eight move went for more that two hours without any response. This is where I expected that I have some bug. Branching factor was already more that 20. Finding mate in 9 (first mate) took 6 hours 5 min and 10 sec. Really rare and interesting position between many others that I can remember. Too dramatic in its branching factor change. I not expected this. Cheers, Leonid. >Cheers, >Heiner
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