Author: leonid
Date: 15:16:26 07/13/01
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On July 13, 2001 at 06:26:59, Uri Blass wrote: >On July 12, 2001 at 14:07:59, leonid wrote: > >>Hi! >> >>If you like, you can solve this mate: >> >>[D]krqn4/rqP3qq/n1QQ4/bbNNBBqq/q1QQ4/Q1P3qq/RQ6/KRN5 w - - >> >>I found very intriguing few anomalies about this position. NPS (node/per/second) >>rate was very high while braching factor was unusually bad. This is true for >>brute force search. NPS was 912k (8 plys search) when it could be expected as >>low as 45k. When I went to try this position on Rebel 10, I found that Rebel's >>NPS is, for the first time, lower that mine. Genius 4 time, for 8 plys search, >>was almost the same as mine. Only from 10 plys my program started gaining some >>modest distance. I never could see nothing like this before while verifying my >>"normal" positions. >> >>Please indicate your result, >> >>Thanks, >>Leonid. > >Chessmaster6000(ss=10) PIII850 Probably, I should try this position in 9 moves by selective and put my variable (my guess is that it correspond to your variable "ss") "ss=10" to ten. I looked mate in 10 moves with ss=6. > Nxb7 Mate in 9 Thanks, Uri! Chessmaster found shorter mate with selective that mine. I found only mate at 10 by selective. >time 5 minutes and 3 seconds. This time indicate that Chessmaster also found this position very heavy. My time in 10 moves was 3 min and 51 sec. Celeron 600Mhz. Leonid. >It could see that Nb7 leads to mate in less than 4.5 minutes but it was only >mate in 11. > >Uri
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