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Subject: Re: Endgame Trap

Author: Slater Wold

Date: 13:17:43 07/16/02

Go up one level in this thread


No tablebases, same engine, same computer, same time:

White(1): setboard 8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 71
Black(1):
Black(1): go
end-game phase
              clearing hash tables
              time surplus   0.00  time limit 1:00 (1:00)
         nss  depth   time  score   variation (1)
starting thread 1
         (4)   10->   0.10   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (3)   11     0.11   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (2)   11->   0.16   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               12     0.19   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (2)   12->   0.27   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               13     0.32   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (2)   13->   0.46   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               14     0.54     ++   1. ... Bb1!!
               14->   3.13  -0.39   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               15     3.27     ++   1. ... Bb1!!
               15     6.71  -3.10   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Ke5 Kc5 5. Kf6 Kd6 6. Kf5 Bd3+ 7. Kf4
                                    Kc5 8. Ke3 Bf1 9. Kd2 Kc4 <HT>
               15     8.22  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 4.
                                    Kc3 Kc5 5. Kd3 Ba2 6. Kc3 Bc4 <HT>
         (4)   15->  11.07  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 4.
                                    Kc3 Kc5 5. Kd3 Ba2 6. Kc3 Bc4 <HT>
         (3)   16    11.33  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 <HT>
         (3)   16->  12.54  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 <HT>
         (2)   17    12.97  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 4.
                                    Kc3 Kc5 5. Kd3 Bd5 6. Kc3 Bc4 <HT>
         (3)   17->  16.13  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 4.
                                    Kc3 Kc5 5. Kd3 Bd5 6. Kc3 Bc4 <HT>
         (2)   18    16.79  -4.19   1. ... Bh7 2. Kc3 Bg8 3. Kd4 Bf7 4.
                                    Kc3 Kc5 5. Kd3 Bb3 6. Kc3 Kd5 7. Kd3
                                    Bc4+ 8. Ke3 Ke5 9. Kd2 Kd4 10. Kd1
                                    Kd3 <HT>
               18    19.97     ++   1. ... Bf7!!
               18    20.25  -4.59   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bf7 6. Kc1 Kc4 7. Kb1
                                    Kb3 8. Kc1 Bg6 9. Kd1 Kxb2 10. Kd2
                                    Kxa3
         (4)   18->  20.54  -4.59   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bf7 6. Kc1 Kc4 7. Kb1
                                    Kb3 8. Kc1 Bg6 9. Kd1 Kxb2 10. Kd2
                                    Kxa3
         (3)   19    21.11  -4.59   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bf7 6. Kc1 Kc4 7. Kb1
                                    Kb3 8. Kc1 Bg6 9. Kd1 Kxb2 10. Kd2
                                    Kxa3
         (2)   19->  25.21  -4.59   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bf7 6. Kc1 Kc4 7. Kb1
                                    Kb3 8. Kc1 Bg6 9. Kd1 Kxb2 10. Kd2
                                    Kxa3
               20    26.29  -4.60   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Be6 6. Kc1 Kc4 7. Kc2
                                    Bf5+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Be4 <HT>
         (2)   20->  32.49  -4.60   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Be6 6. Kc1 Kc4 7. Kc2
                                    Bf5+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Be4 <HT>
               21    34.19  -4.73   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bd5 6. Kc1 Kc4 7. Kc2
                                    Be4+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Bd5 <HT>
         (2)   21->  43.75  -4.73   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bd5 6. Kc1 Kc4 7. Kc2
                                    Be4+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Bd5 <HT>
               22    45.97  -5.11   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bd5 6. Kc1 Kc4 7. Kc2
                                    Be4+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Bd3 12. Kd4 Kb3
         (2)   22->  59.72  -5.11   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bd5 6. Kc1 Kc4 7. Kc2
                                    Be4+ 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Bd3 12. Kd4 Kb3
              time=1:00  cpu=396%  mat=-2  n=97898133  fh=98%  nps=1627k
              ext-> chk=3607104 cap=12684 pp=604249 1rep=49158 mate=104
              predicted=0  nodes=97898133  evals=15442114
              endgame tablebase-> probes done=0  successful=0
              SMP->  split=4341  stop=194  data=9/32  cpu=3:58  elap=1:00


>Crafty 18.15 on a dual AMD 1.73Ghz:
>
>White(1): setboard 8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 71
>Black(1): go
>end-game phase
>              clearing hash tables
>              time surplus   0.00  time limit 1:00 (1:00)
>         nss  depth   time  score   variation (1)
>starting thread 1
>         (3)   11->   1.11  -0.01   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>         (2)   12     1.20  -0.01   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>         (3)   12->   1.23  -0.01   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>         (2)   13     1.61  -0.01   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>         (4)   13->   2.59  -0.01   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>               14     3.05     ++   1. ... Bf7!!
>         (2)   14->   5.08  -0.40   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bg6+ 4.
>                                    Kc3 Bb1 5. b4+ axb3 <HT>
>               15     5.36     ++   1. ... Bf7!!
>               15    10.55  -2.88   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
>                                    Kc3 Bc4 <HT>
>               15->  11.14  -2.88   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
>                                    Kc3 Bc4 <HT>
>               16    11.69     ++   1. ... Bf7!!
>               16    11.84  -3.63   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. Kd2 Kd4 6. Kc1 Kd3 7. Kd1
>                                    Bb3+ 8. Ke1 Kc2 9. Kf2 Kxb2
>         (3)   16->  12.06  -3.63   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. Kd2 Kd4 6. Kc1 Kd3 7. Kd1
>                                    Bb3+ 8. Ke1 Kc2 9. Kf2 Kxb2
>               17    12.25     ++   1. ... Bf7!!
>         (2)   17    12.42  -5.36   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. Kd2 Kd4 6. Kc1 Kd3 7. Kb1
>                                    Kd2 8. Ka1 Kc2 9. b4 axb3
>         (4)   17->  12.89  -5.36   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. Kd2 Kd4 6. Kc1 Kd3 7. Kb1
>                                    Kd2 8. Ka1 Kc2 9. b4 axb3
>               18    12.98     ++   1. ... Bf7!!
>         (4)   18->  17.05  -5.75   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. Kd2 Kd4 6. Kc1 Kd3 7. Kb1
>                                    Kd2 8. Ka1 Kc2 9. b4 axb3
>               19    17.08     ++   1. ... Bf7!!
>         (3)   19    27.41 -Mat24   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
>                                    Kc3 Bc4 5. Kc2 Kd4 <HT>
>               19->  28.91 -Mat24   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
>                                    Kc3 Bc4 5. Kc2 Kd4 <HT>
>               20    29.41 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <HT>
>         (2)   20->  29.91 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <HT>
>               21    30.11 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   21->  31.66 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               22    32.06 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   22->  33.36 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               23    33.78 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   23->  36.48 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               24    37.34 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   24->  38.86 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               25    40.38 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   25->  43.02 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               26    44.91 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   26->  46.63 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               27    49.83 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   27->  53.23 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>               28    55.31 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>         (2)   28->  58.55 -Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
>                                    Kc3 Ke4 5. b4 axb3 <EGTB>
>              time=1:00  cpu=187%  mat=-2  n=33954446  fh=98%  nps=562k
>              ext-> chk=819056 cap=3295 pp=139948 1rep=2795 mate=26
>              predicted=0  nodes=33954446  evals=2206527
>              endgame tablebase-> probes done=155417  successful=56938
>              SMP->  split=5200  stop=219  data=9/32  cpu=1:53  elap=1:00



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