Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Endgame Trap

Author: Mike Byrne

Date: 17:00:48 07/16/02

Go up one level in this thread


EGTB cache memory = 20M bytes.
hash table memory = 192M bytes.
pawn hash table memory = 40M bytes.
play best book line after search.
choose from 3 best moves.
book learning disabled
result learning disabled
position learning disabled
pondering disabled.
noise level set to 500000.
search time set to 600.00.

Dual P4 Xeon 1.7 Ghz - Crafty by Bob Hyatt with what I call "Booster Extensions"
(created by me) - soon to be released - email me at mfbyrne_pa @msn.com if
you're interested - I'm in final testing phase now.  I have received all your
emails.
I have so many requests - that I have decided to email everybody (that requested
modified Crafty 17.14) both the P3/P4 version and the P2/AMD version when
complete.  This extension is so easy to tinker with - I'm thinking about adding
user "settings" so you can see the impact.  With this position, I can get it
down to 9 seconds (w/EGTB) - but it blows up other searches (analysis below).



===================================
WITH EGTB
===================================

White(1): [D]8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 71

Black(1): st 60
search time set to 60.00.
Black(1): go
end-game phase
              time surplus   0.00  time limit 1:00 (1:00)
         nss  depth   time  score   variation (1)
               14     0.45   3.58   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
               14->   0.54   3.58   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
               15     0.64   3.58   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
         (2)   15->   0.75   3.58   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
               16     0.82     ++   1. ... Bf7!!
         (4)   16->   1.71   3.97   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
               17     1.82     ++   1. ... Bf7!!
         (2)   17->   2.42   4.36   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Bb3 8. Kb1 Bf7 <HT>
               18     2.51     ++   1. ... Bf7!!
               18    12.90  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <HT>
               18->  13.36  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <HT>
               19    14.15  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               19->  14.86  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               20    15.29  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <HT>
         (3)   20->  15.93  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <HT>
         (2)   21    16.82  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   21->  18.04  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               22    18.87  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   22->  20.23  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               23    22.03  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   23->  23.71  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               24    25.26  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   24->  27.28  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               25    29.89  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   25->  32.98  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               26    36.04  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   26->  38.42  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               27    44.68  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   27->  49.92  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
               28    54.14  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
         (2)   28->  56.86  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b4 axb3 <EGTB>
              time=1:00  cpu=196%  mat=2  n=47785701  fh=99%  nps=789324
              ext-> checks=1020205 recaps=3770 pawns=233891 1rep=4585 thrt:0
              predicted=0  nodes=47785701  evals=499621
              endgame tablebase-> probes done=61225  successful=61225
              SMP->  split=6638  stop=223  data=11/64  cpu=1:58  elap=1:00

mate in 23 moves.

===================================
NO EGTB
===================================

Crafty v17.14 (2 cpus)

White(1): 8/8/6b1/1k6/p2K4/P7/1P6/8 b - - 0 71

       +---+---+---+---+---+---+---+---+
    8  |   |   |   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    7  |   |   |   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    6  |   |   |   |   |   |   | *B|   |
       +---+---+---+---+---+---+---+---+
    5  |   | *K|   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    4  | *P|   |   | K |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    3  | P |   |   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    2  |   | P |   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
    1  |   |   |   |   |   |   |   |   |
       +---+---+---+---+---+---+---+---+
         a   b   c   d   e   f   g   h

Black(1): st 60
search time set to 60.00.
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
               13     0.37   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (2)   13->   0.55   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               14     0.61     ++   1. ... Bb1!!
               14     0.81   3.58   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1
         (2)   14->   1.09   3.58   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1
               15     1.42   3.81   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1 Bc4
         (2)   15->   1.90   3.81   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1 Bc4
               16     2.69   3.78   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb3 4.
                                    Kc3 Kc5 5. Kd3 Kd5 6. Kc3 Ke4 7. Kd2
                                    Kd4 8. Ke2 Bc4+ 9. Kd2 Bd3
               16     4.72   3.88   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kd2 Kd4 6. Kd1 Bg6 <HT>
         (4)   16->   4.72   3.88   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kd2 Kd4 6. Kd1 Bg6 <HT>
               17     5.28     ++   1. ... Bf7!!
         (2)   17->   6.95   4.27   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kd2 Kd4 6. Kd1 Bg6 <HT>
               18     7.70     ++   1. ... Bf7!!
               18     8.56   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 7. Kc1
                                    Kc4 8. Kc2 Ba6 <HT>
         (2)   18->  10.28   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 7. Kc1
                                    Kc4 8. Kc2 Ba6 <HT>
               19    11.17   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 <HT>
         (2)   19->  13.78   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 <HT>
               20    17.30   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 7. Kc2
                                    Kc4 8. Kb1 Kb3 9. Kc1 Bd3 10. Kd2 Ba6
                                    11. Kc1 Bf1 <HT>
         (3)   20->  23.76   5.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bd5 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bb5 7. Kc2
                                    Kc4 8. Kb1 Kb3 9. Kc1 Bd3 10. Kd2 Ba6
                                    11. Kc1 Bf1 <HT>
               21    24.25     ++   1. ... Bf7!!
         (2)   21    38.05   5.48   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 <HT>
               21->  44.28   5.48   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 <HT>
               22    46.55     ++   1. ... Bf7!!
               22    56.03   6.70   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kd2 Bd5 6. Ke1 Kd3 7. Kf2
                                    Kc2 8. Ke3 Kxb2 <HT>
              time=1:00  cpu=218%  mat=2  n=83787821  fh=98%  nps=1393676
              ext-> checks=4353529 recaps=14104 pawns=543175 1rep=57569 thrt:34
              predicted=0  nodes=83787821  evals=13499241
              endgame tablebase-> probes done=0  successful=0
              SMP->  split=4199  stop=220  data=9/64  cpu=2:11  elap=1:00


=============================================================================
Very Aggressive Settings that negatively impact other searches (less than 10
seconds)
==============================================================================
Crafty v17.14 (2 cpus)

White(1): 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 10:00 (10:00)
         nss  depth   time  score   variation (1)
starting thread 1
               14     2.45   3.77   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bd5 4.
                                    Kd3 Be6 5. Kc3 Bd5 <HT>
         (2)   14->   2.98   3.77   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bd5 4.
                                    Kd3 Be6 5. Kc3 Bd5 <HT>
               15     3.68   3.86   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kb1 Bd5 6. Kc1 Be4 7. Kd2
                                    Kc4 <HT>
         (2)   15->   4.62   3.86   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kb1 Bd5 6. Kc1 Be4 7. Kd2
                                    Kc4 <HT>
               16     4.95     ++   1. ... Bf7!!
         (2)   16->   6.64   4.25   1. ... Bf7 2. Kd3 Kc5 3. Kc3 Bc4 4.
                                    Kc2 Kd4 5. Kb1 Bd5 6. Kc1 Be4 7. Kd2
                                    Kc4 <HT>
               17     6.79     ++   1. ... Bf7!!
               17     9.98  Mat24   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Be6 4.
                                    Kc3 Bc4 5. Kc2 Kd4 <HT>
               17->  11.42  Mat24   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Be6 4.
                                    Kc3 Bc4 5. Kc2 Kd4 <HT>
               18    12.84  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <HT>
               18->  14.01  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <HT>
               19    15.56  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               19->  17.22  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               20    18.97  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               20->  20.82  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               21    23.42  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               21->  25.50  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               22    28.82  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               22->  31.82  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>
               23    36.14  Mat23   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. b3 axb3 <EGTB>



================================================================
NO EGTB - Running in the background while I'm doing other stuff
================================================================
takes about 4 minutes to see that it can queen - this can impact the search on
an SMP
machine - thus the difference from this and above


Crafty v17.14 (2 cpus)

White(1): 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 10:00 (10:00)
         nss  depth   time  score   variation (1)
starting thread 1
               13     0.38   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
         (2)   13->   0.55   0.00   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb1
               14     0.61     ++   1. ... Bb1!!
               14     0.81   3.58   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1
         (2)   14->   1.09   3.58   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1
               15     1.39   3.81   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1 Bc4
         (2)   15->   1.84   3.81   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bc4 4.
                                    Kc3 Kc5 5. Kc2 Kd4 6. Kb1 Kd3 7. Kc1
                                    Ba2 8. Kd1 Bc4
               16     2.66   3.78   1. ... Bb1 2. Kc3 Ba2 3. Kd4 Bb3 4.
                                    Kc3 Kc5 5. Kd3 Kd5 6. Kc3 Ke4 7. Kd2
                                    Kd4 8. Ke2 Bc4+ 9. Kd2 Bd3
               16     4.34   3.80   1. ... Kc6 2. Kc3 Bf7 3. Kd4 Bb3 4.
                                    Kc3 Kc5 <HT>
               16     4.88   3.98   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kd2 Kd4 <HT>
         (3)   16->   4.88   3.98   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kd2 Kd4 <HT>
         (2)   17     5.44   4.37   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 <HT>
         (2)   17->   6.56   4.37   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 <HT>
               18     6.88   4.37   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 <HT>
         (3)   18->   8.63   4.37   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 <HT>
         (2)   19     9.20   4.44   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Be6 7. Kc2
                                    Kc4 8. Kd2 Kb3 9. Kc1 Bf5 10. Kd2 Kxb2
         (3)   19->  11.69   4.44   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Be6 7. Kc2
                                    Kc4 8. Kd2 Kb3 9. Kc1 Bf5 10. Kd2 Kxb2
               20    12.02     ++   1. ... Bf7!!
         (2)   20    13.45   5.06   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 7. Ke2
                                    Kc4 8. Ke3 Kb3 9. Kd4 Kxb2 10. Kc5
                                    Kxa3 11. Kb5
         (2)   20->  16.83   5.06   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 7. Ke2
                                    Kc4 8. Ke3 Kb3 9. Kd4 Kxb2 10. Kc5
                                    Kxa3 11. Kb5
               21    19.09   5.38   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 7. Ke2
                                    Kc4 8. Ke3 Kb3 9. Kd4 Kxb2 10. Kd3
                                    Kxa3 11. Kc3 Ka2
         (2)   21->  23.56   5.38   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bf7 7. Ke2
                                    Kc4 8. Ke3 Kb3 9. Kd4 Kxb2 10. Kd3
                                    Kxa3 11. Kc3 Ka2
               22    27.09   5.44   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bd5 7. Kc2
                                    Kc4 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 <HT>
         (2)   22->  32.72   5.44   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Bb3 4.
                                    Kc3 Bc4 5. Kc2 Kd4 6. Kd2 Bd5 7. Kc2
                                    Kc4 8. Kd2 Kb3 9. Ke3 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 <HT>
               23    33.53     ++   1. ... Bf7!!
               23     2:56   6.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 <HT>
               23->   3:06   6.08   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 <HT>
               24     3:08     ++   1. ... Bf7!!
               24     4:19  11.70   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 7. Kb4
                                    Kd3 8. Kb5 Kc2 9. Kc5 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Ka2 12. Kb4 Kb2 13. Kc5
               24->   4:32  11.70   1. ... Bf7 2. Kc3 Kc5 3. Kd3 Kd5 4.
                                    Kc3 Ke4 5. Kb4 Bb3 6. Kc3 Ke3 7. Kb4
                                    Kd3 8. Kb5 Kc2 9. Kc5 Kxb2 10. Kd4
                                    Kxa3 11. Kc3 Ka2 12. Kb4 Kb2 13. Kc5
Black(0): ?
              time=4:48  cpu=203%  mat=2  n=391049898  fh=8%  nps=1356493
              ext-> checks=39605997 recaps=27762 pawns=1283220 1rep=593543
thrt:2067
              predicted=0  nodes=391049898  evals=35607347
              endgame tablebase-> probes done=0  successful=0
              SMP->  split=7504  stop=354  data=11/64  cpu=9:46  elap=4:48



This page took 0 seconds to execute

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

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.