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Subject: Crafty Bug?

Author: Slater Wold

Date: 22:01:57 08/13/02


White(1): setboard 8/8/3pR1P1/2k5/8/1p1b4/7K/8 b - - 0 67
Black(1): go
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 3:00 (3:00)
         nss  depth   time  score   variation (1)
starting thread 1
         (4)    8->   0.39   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (3)    9     0.48   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (4)    9->   0.73   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (3)   10     0.97   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (4)   10->   1.67   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (3)   11     1.70   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (4)   11->   3.55   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (3)   12     3.55   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (4)   12->   7.45   0.01   1. ... Bxg6 2. Rxg6 <HT>
         (3)   13     7.53   0.01   1. ... Bxg6 2. Rxg6 <HT>
               13    21.12     ++   1. ... b2!!
               13->   2:49  -0.38   1. ... b26
              time=3:00  cpu=307%  mat=1  n=242037717  fh=94%  nps=1342k
              ext-> chk=29936339 cap=78644 pp=227271 1rep=1144737 mate=32723
              predicted=0  nodes=242037717  evals=21110434
              endgame tablebase-> probes done=239240  successful=53187
              SMP->  split=778  stop=81  data=9/32  cpu=9:13  elap=3:00

Black(1): b2
              time used:   3:00

#1 - You should see b2 wins pretty much immediatly.  Sure, 21.12 seconds isn't
bad, but imagine this on a PIII 600!  -0.38 isn't very convincing either.

#2 - What's up with 13->   2:49  -0.38   1. ... b26  <//==- that?

#3 - Any reason you can see why Crafty would take *forver* (even after this
move) to see the win?



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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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