Author: leonid
Date: 11:45:58 05/04/02
Go up one level in this thread
On May 04, 2002 at 12:33:48, Heiner Marxen wrote: >On May 04, 2002 at 09:29:14, Rodney Topor wrote: > >>On May 04, 2002 at 06:18:09, leonid wrote: >> >>>Hi! >>> >>>This one should be at reach of every program: >>> >>>[D]bbkrNQq1/n1P1R1rQ/n1q1R3/BqpqQNQK/3rQ3/3pP3/3pP3/3qQ2B w - - >>> >>>Please indicate your result. >>> >>>Thanks, >>>Leonid. >> >>MacChess 5.0.1 on a 250MHz PowerBook G3 found a mate in 8 after about 6 mins 30 >>secs. The PV is: >> >>1. cxd8=Q+ Qxd8 2. Rxc6+ Qxc6 3. Qe6+ Rd7 4. Qxd7+ Qcxd7 5. Nxe6+ Bxd6 >>6. Nxd6+ Qxd6 7.Qxa8+ Nb8 8. Bb7# >> >>Apologies if I've made a typo in transcribing this - MacChess doesn't produce >>output in a convenient form for copying. >> >>Rodney > >Hmm, something went wrong. According to Chest there is no mate-in-8. >When I replay your above PV, after 1.cxd8=Q+ Qxd8 2.Rxc6+ Qxc6 3.Qe6+ Rd7 >4.Qxd7+ Qcxd7 I reach >[D]bbkqNQq1/n2qR1rQ/n7/B1p2NQK/4Q3/3pP3/3pP3/3qQ2B w - - >where both, e6 and d6 are empty. If 5.Nd6+ would be meant: that is ambigous, >and would be either Ned6+ or Nfd6+. May be there is a typo, but since >Chest thinks there is no mate in 8, most probably you do not have the >correct start position. Please double check. Thanks, Heiner! I just waited that somebody will verify this position to know what to do. If some other program was able to find mate in 8, it could signify that I must check my graphics (I did this kind of mistake few times), or look for possible bug in my program logic. Cheers, Leonid. >Cheers, >Heiner
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