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Subject: Re: 60 minutes and Crafty.

Author: Slater Wold

Date: 18:07:50 10/09/01

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On October 09, 2001 at 13:01:13, Uri Blass wrote:

>[D]8/1P6/8/5k2/2K4p/7r/1r4p1/6R1 b - - 0 61

PFGA: EPD record: 1   ID: Mate in 10
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 60:00 (60:00)
         nss  depth   time  score   variation (1)
starting thread 1
                8     0.30 -13.71   1. ... Rhb3 2. b8=Q Rxb8 3. Kd4 R8b4+
                                    4. Kd3 h3 5. Kc3 Ke5
                8->   0.50 -13.71   1. ... Rhb3 2. b8=Q Rxb8 3. Kd4 R8b4+
                                    4. Kd3 h3 5. Kc3 Ke5
                9     0.56     ++   1. ... Rhb3!!
                9     1.51 -21.26   1. ... Rxb7 2. Kc5 Rc3+ 3. Kd6 Rd7+
                                    4. Kxd7 Rc1 5. Ke8 Rxg1 6. Kf8 h3 7.
                                    Ke7
                9     2.17 -25.54   1. ... Rc3+ 2. Kxc3 Rxb7 3. Ra1 g1=Q
                                    4. Ra5+ Qc5+ 5. Kd3 Qxa5 6. Kd4 Qd2+
                                    7. Kc5 h3
         (3)    9->   2.22 -25.54   1. ... Rc3+ 2. Kxc3 Rxb7 3. Ra1 g1=Q
                                    4. Ra5+ Qc5+ 5. Kd3 Qxa5 6. Kd4 Qd2+
                                    7. Kc5 h3
               10     2.28     ++   1. ... Rc3+!!
         (2)   10     2.76 -Mat29   1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1
                                    4. Rxg2 <HT>
         (4)   10->   5.81 -Mat29   1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1
                                    4. Rxg2 <HT>
         (3)   11     6.94 -Mat29   1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1
                                    4. Rxg2 <HT>
         (4)   11->  20.92 -Mat29   1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 Rb1
                                    4. Rxg2 <HT>
         (3)   12    22.80 -Mat28   1. ... Rc3+ 2. Kxc3 Rxb7 3. Kc2 h3
                                    4. Ra1 g1=Q 5. Ra5+ Qc5+ 6. Rxc5+ <HT>
               12    45.97 -Mat26   1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+
                                    4. Kxc3 <HT>
               12->   1:09 -Mat26   1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+
                                    4. Kxc3 <HT>
               13     1:34 -Mat26   1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+
                                    4. Kxc3 <HT>
         (4)   13->   3:34 -Mat26   1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+
                                    4. Kxc3 <HT>
         (3)   14     4:10 -Mat26   1. ... Rxb7 2. Rxg2 Rc3+ 3. Kd4 Rd7+
                                    4. Kxc3 <HT>
              time=60:01  cpu=201%  mat=-6  n=1997089692  fh=99%  nps=554k
              ext-> chk=982088492 cap=1699772 pp=7904550 1rep=95009627 mate=2916
26
              predicted=0  nodes=1997089692  evals=35885390
              endgame tablebase-> probes done=630737  successful=155980
              hashing-> trans/ref=56%  pawn=99%  used=-70%
              SMP->  split=1410  stop=156  data=10/32  cpu=121:12  elap=60:01
Black(1):

6+ billion nodes.  And nothing.

It sat from 4:10 to 60:01 looking at Rg3.




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