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Subject: Re: Crafty bench and position #1 (long post) 1:06m != 17.69s

Author: Michel Langeveld

Date: 07:11:08 01/21/00

Go up one level in this thread


On January 21, 2000 at 09:28:04, Robert Hyatt wrote:

>On January 21, 2000 at 08:07:34, Michel Langeveld wrote:
>
>>Bob,
>>
>>Why is it that position #1/6 takes so long since Crafty 17.05?
>>
>>Michel Langeveld
>>http://stad.dsl.nl/~rudolf
>
>
>Each position had a specific search depth.  Jason picked them since he wrote
>(and maintains) this code.  It is difficult to pick a depth that works for
>slow machines _and_ fast parallel machines.  I have run the bench on my
>PII/400 notebook and didn't see any taking a way-long time lately.
>
>Can you give me an idea of how long each runs (from the log file)???  It is
>certainly possible for me to adjust the depth for any position if needed to
>bring it into line with the others...

I didn't meant the difference between position #1 and one of the other bench
positions, but more the difference between the time of position #1 with Crafty
17.05 and Crafty 17.04.

I put some benchmark's at my Crafty Benchmark Page:
http://stad.dsl.nl/~rudolf/

Log file for crafty 17.05:
------------------------------------ CUT HERE -----------------------
pondering enabled.
EGTB cache memory = 16M bytes.
hash table memory = 48M bytes.
pawn hash table memory = 32M bytes.


Crafty v17.5

White(1): bench
Running benchmark. . .

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

end-game phase
              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     1.15   0.32   g5 b5 e5 Rd5 gxh6 gxh6 axb5 cxb5 Rc7
                7     1.37   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4
                7->   1.37   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4
                8     1.48   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4 Rd3
                8->   1.53   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4 Rd3
                9     2.47   0.55   e5 R6d7 Kf3 Ke8 f5 Rxd4 Nxd4 Rxd4 Rc4
                9->   2.63   0.55   e5 R6d7 Kf3 Ke8 f5 Rxd4 Nxd4 Rxd4 Rc4
               10     4.61   0.51   e5 Rd5 f5 b5 f6 gxf6 exf6 Ng8 Nxa5
                                    b4 Rc5 Nxf6 Nxc6 Nxg4+
               10->   4.99   0.51   e5 Rd5 f5 b5 f6 gxf6 exf6 Ng8 Nxa5
                                    b4 Rc5 Nxf6 Nxc6 Nxg4+
               11     7.19   0.32   e5 Rd5 f5 b5 f6 gxf6 exf6 Ng8 Nxa5
                                    Nxf6 Kf3 R8d6 Nxc6 bxa4
               11    55.80   0.36   g5 Re6 Kf3 f6 gxf6 gxf6 R3c2 Kf7 Rg2
                                    f5 e5 Nd5
               11     1:05   0.53   Kf3 R6d7 e5 Re8 f5 Ra7 Ke4 b5 axb5
                                    cxb5 Rc7 Rxc7 Rxc7
               11->   1:05   0.53   Kf3 R6d7 e5 Re8 f5 Ra7 Ke4 b5 axb5
                                    cxb5 Rc7 Rxc7 Rxc7
              time=1:06  cpu=99%  mat=0  n=15368579  fh=89%  nps=232048
              ext-> checks=239500 recaps=62994 pawns=25086 1rep=11753 thrt:362
              predicted=0  nodes=15368579  evals=7287490
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=33%  pawn=98%  used=61%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.76   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bg5 h6 Bf4
                7->   0.87   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bg5 h6 Bf4
                8     1.92   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bb5 e6 O-O Bd6
                8->   2.58   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bb5 e6 O-O Bd6
                9     8.51   0.75   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bc4
                9->   9.33   0.75   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bc4
               10    14.11   0.66   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bb5 Ne5
               10->  19.99   0.66   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bb5 Ne5
               11    32.95   0.72   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O c4 Bd4 Kf7 f4
               11->  40.20   0.72   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O c4 Bd4 Kf7 f4
              time=40.53  cpu=99%  mat=0  n=8852404  fh=92%  nps=218523
              ext-> checks=333749 recaps=30775 pawns=11165 1rep=24393 thrt:509
              predicted=0  nodes=8852404  evals=1525439
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=33%  pawn=97%  used=52%

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

end-game phase
              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                9     0.60   0.31   f5 Kd7 Nf4 Kc6 a4 a5 fxg6 fxg6 Ne6
                                    Bf7
                9->   0.65   0.31   f5 Kd7 Nf4 Kc6 a4 a5 fxg6 fxg6 Ne6
                                    Bf7
               10     1.09   0.41   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 g5 Nxh5 g4
               10->   1.26   0.41   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 g5 Nxh5 g4
               11     2.25   0.43   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 a4 Kb4 gxf5
                                    Nxh5
               11->   2.41   0.43   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 a4 Kb4 gxf5
                                    Nxh5
               12     4.77   0.63   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 a4 Kb4 gxf5
                                    Kxa4 Kb6+ Kb4
               12->   6.15   0.63   f5 Kd7 Nf4 Kc6 Kd2 a5 Kc3 a4 Kb4 gxf5
                                    Kxa4 Kb6+ Kb4
               13    12.13   0.79   f5 Kd7 Nf4 Kc6 Kd2 g5 Nxh5 Bd7 f6 g4
                                    Nf4 Bf5 Kc3
               13->  14.17   0.79   f5 Kd7 Nf4 Kc6 Kd2 g5 Nxh5 Bd7 f6 g4
                                    Nf4 Bf5 Kc3
               14    33.12   0.94   f5 Kd7 Nf4 Kc6 h4 a5 a4 Kb7 Nxd5 Bxa4
                                    fxg6 fxg6 e6 Kc6 Nc3
               14->  42.34   0.94   f5 Kd7 Nf4 Kc6 h4 a5 a4 Kb7 Nxd5 Bxa4
                                    fxg6 fxg6 e6 Kc6 Nc3
              time=42.67  cpu=99%  mat=0  n=11974376  fh=90%  nps=280430
              ext-> checks=383471 recaps=42597 pawns=78454 1rep=7822 thrt:225
              predicted=0  nodes=11974376  evals=1751314
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=50%  pawn=96%  used=68%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.49  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Rd5 Rxd5 Qxd5
                7->   0.55  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Rd5 Rxd5 Qxd5
                8     1.04  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Ne4
                8->   1.42  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Ne4
                9     2.80  -0.08   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Rxd8
                                    Ne6
                9->   3.18  -0.08   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Rxd8
                                    Ne6
               10     6.53  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 e4
               10->   9.17  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 e4
               11    15.60  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 a5 f3 f6
                                    Rxd8 Rxd8 Ne6
               11->  23.51  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 a5 f3 f6
                                    Rxd8 Rxd8 Ne6
              time=23.83  cpu=98%  mat=0  n=6235376  fh=91%  nps=261770
              ext-> checks=135798 recaps=20763 pawns=263 1rep=17470 thrt:607
              predicted=0  nodes=6235376  evals=1188431
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=35%  pawn=98%  used=38%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                6     0.60  -0.01   Rfe8 Qe3 Bd8 Rac1 Nc5 Nxc5 Qxc5
                6     1.15     ++   Bxe4!!
                6     1.26   1.14   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                6->   1.26   1.14   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                7     1.54   1.15   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bc6
                7->   1.59   1.15   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bc6
                8     2.09   0.93   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Rac1
                8->   2.36   0.93   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Rac1
                9     4.28   1.12   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Nxd7 Nxd7 Bc3 Rb8
                9->   4.50   1.12   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Nxd7 Nxd7 Bc3 Rb8
               10     6.75   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Rac1 Re2 Rc7
               10->   8.29   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Rac1 Re2 Rc7
               11    14.83   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rc7 Bd4 Nfd5 Rac1
               11->  17.41   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rc7 Bd4 Nfd5 Rac1
               12    30.98   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Nd4 Bd8 Nc8 Bc7 Ne7+ Kh8
               12->  42.90   0.96   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4 Nd4 Bd8 Nc8 Bc7 Ne7+ Kh8
              time=43.23  cpu=99%  mat=0  n=9768418  fh=93%  nps=225911
              ext-> checks=81534 recaps=34608 pawns=2245 1rep=3108 thrt:154
              predicted=0  nodes=9768418  evals=2145973
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=43%  pawn=99%  used=45%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.61   0.24   Bf5 Rfc1 O-O a5 Qe8 a6 b6
                7->   0.61   0.24   Bf5 Rfc1 O-O a5 Qe8 a6 b6
                8     1.38   0.24   Bf5 Rfc1 O-O a5 Qe8 a6 b6 Rab1
                8->   1.87   0.24   Bf5 Rfc1 O-O a5 Qe8 a6 b6 Rab1
                9     6.98   0.34   Bf5 a5 O-O Qd2 a6 Bb6 Qd7 Rad1 Rae8
                9->   7.64   0.34   Bf5 a5 O-O Qd2 a6 Bb6 Qd7 Rad1 Rae8
               10    19.83   0.29   Bf5 Qd1 O-O a5 Qc7 a6 bxa6 Rxa6 Rfb8
                                    Qc1 Re8 <HT>
               10->  24.34   0.29   Bf5 Qd1 O-O a5 Qc7 a6 bxa6 Rxa6 Rfb8
                                    Qc1 Re8 <HT>
               11     1:14   0.33   Bf5 Qd2 O-O a5 Re8 a6 b6 Rfd1 Bg4 Ne2
                                    Qc7
               11->   1:15   0.33   Bf5 Qd2 O-O a5 Re8 a6 b6 Rfd1 Bg4 Ne2
                                    Qc7
              time=1:16  cpu=99%  mat=0  n=15749892  fh=91%  nps=206393
              ext-> checks=148986 recaps=49008 pawns=22562 1rep=8907 thrt:15
              predicted=0  nodes=15749892  evals=4363016
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=31%  pawn=98%  used=71%
Total nodes: 94499352
Raw nodes per second: 323627
Total elapsed time: 292
SMP time-to-ply measurement: 2.191781
------------------------------------------------------------------------
Log file for crafty 17.04:
------------------------------------------------------------------------
pondering enabled.
EGTB cache memory = 16M bytes.
hash table memory = 48M bytes.
pawn hash table memory = 32M bytes.


Crafty v17.4

White(1): bench
Running benchmark. . .

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

end-game phase
              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.71   0.35   Kf3 Ke8 g5 b5 Nxa5 bxa4 Nxc6 Nxc6 Rxc6
                                    Rxc6 Rxc6 Rxd4 gxh6
                7     0.82   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4
                7->   0.88   0.54   e5 Rd5 f5 Rxd4 Nxd4 Rxd4 Rc4
                8     1.10   0.29   e5 Rd5 f5 b5 f6 bxa4 fxe7+ Kxe7 Nc5
                                    Rxd4
                8     1.65   0.34   Kf3 Ke8 g5 hxg5 fxg5 b5 e5 Rd5 Ra1
                                    bxa4 Rxa4
                8->   2.86   0.34   Kf3 Ke8 g5 hxg5 fxg5 b5 e5 Rd5 Ra1
                                    bxa4 Rxa4
                9     4.34   0.42   Kf3 Re8 e5 Rd5 Ke4 Red8 g5 Ke8 Rc4
                9->   4.83   0.42   Kf3 Re8 e5 Rd5 Ke4 Red8 g5 Ke8 Rc4
               10     6.92   0.45   Kf3 Re8 e5 Rd5 Ke4 Red8 g5 hxg5 fxg5
                                    b5 Ra1 bxa4 Rxa4
               10->   9.12   0.45   Kf3 Re8 e5 Rd5 Ke4 Red8 g5 hxg5 fxg5
                                    b5 Ra1 bxa4 Rxa4
               11    16.42   0.46   Kf3 Ke8 e5 Rxd4 Nxd4 Rxd4 Rc4 Rxc4
                                    Rxc4 b5 Rc5 bxa4 Rxa5
               11->  17.36   0.46   Kf3 Ke8 e5 Rxd4 Nxd4 Rxd4 Rc4 Rxc4
                                    Rxc4 b5 Rc5 bxa4 Rxa5
              time=17.69  cpu=98%  mat=0  n=4142082  fh=90%  nps=234280
              ext-> checks=57083 recaps=17555 pawns=6213 1rep=1408 thrt:214
              predicted=0  nodes=4142082  evals=1383571
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=36%  pawn=97%  used=22%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.76   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bg5 h6 Bf4
                7->   0.82   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bg5 h6 Bf4
                8     1.86   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bb5 e6 O-O Bd6
                8->   2.52   0.50   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Bb5 e6 O-O Bd6
                9     8.23   0.75   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bc4
                9->   9.06   0.75   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bc4
               10    14.28   0.66   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bb5 Ne5
               10->  21.20   0.66   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O Kf7 Bb5 Ne5
               11    34.71   0.72   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O c4 Bd4 Kf7 f4
               11->  42.45   0.72   e6 fxe6 Nxe6 Bxe6 Qxe6 Qd7 Qxd7+ Nxd7
                                    Be3 e6 O-O-O c4 Bd4 Kf7 f4
              time=42.73  cpu=99%  mat=0  n=9390635  fh=92%  nps=219509
              ext-> checks=358806 recaps=32929 pawns=11325 1rep=26091 thrt:545
              predicted=0  nodes=9390635  evals=1659212
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=31%  pawn=97%  used=54%

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

end-game phase
              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
               10     0.99   0.26   f5 gxf5 Nf4 Bc6 h4 f6 Nxh5 fxe5 dxe5
                                    Ke6 Kd4 <HT>
               10->   1.26   0.26   f5 gxf5 Nf4 Bc6 h4 f6 Nxh5 fxe5 dxe5
                                    Ke6 Kd4 <HT>
               11     2.41   0.52   f5 gxf5 Nf4 Bc6 Nxh5 Bb5 Nf6 Ke6 h4
                                    c3 h5 <HT>
               11->   2.63   0.52   f5 gxf5 Nf4 Bc6 Nxh5 Bb5 Nf6 Ke6 h4
                                    c3 h5 <HT>
               12     4.23   0.38   f5 gxf5 Nf4 Bc6 Nxh5 a5 h4 a4 Nf6 a3
                                    Kf4 Ke6
               12->   6.15   0.38   f5 gxf5 Nf4 Bc6 Nxh5 a5 h4 a4 Nf6 a3
                                    Kf4 Ke6
               13    16.48   0.73   f5 g5 h4 gxh4 gxh4 Kd7 f6 a5 Nf4 Kc6
                                    Nxh5 Bd7 Nf4 Bf5
               13->  20.05   0.73   f5 g5 h4 gxh4 gxh4 Kd7 f6 a5 Nf4 Kc6
                                    Nxh5 Bd7 Nf4 Bf5
               14    38.01   0.74   f5 gxf5 Nf4 Bc6 Nxh5 a5 Kd2 Bb5 h4
                                    a4 Nf6 Ke6 Kc3 a3
               14->  51.57   0.74   f5 gxf5 Nf4 Bc6 Nxh5 a5 Kd2 Bb5 h4
                                    a4 Nf6 Ke6 Kc3 a3
              time=51.90  cpu=99%  mat=0  n=15470479  fh=91%  nps=298197
              ext-> checks=502670 recaps=62299 pawns=82070 1rep=8340 thrt:202
              predicted=0  nodes=15470479  evals=1708416
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=53%  pawn=96%  used=77%

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

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.49  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Rd5 Rxd5 Qxd5
                7->   0.49  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Rd5 Rxd5 Qxd5
                8     0.99  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Ne4
                8->   1.31  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Ne4
                9     2.41  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Rxd8
                                    Ne6
                9->   2.80  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Rxd8
                                    Ne6
               10     5.93  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 e4
               10->   8.13  -0.12   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 e4
               11    13.45  -0.15   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 a5 c4
               11->  22.30  -0.15   Bf5 Qf3 Bg6 Rad1 Rad8 Qe3 f6 Rxd8 Qxd8
                                    Nf3 a5 c4
              time=22.63  cpu=98%  mat=0  n=5995072  fh=91%  nps=264800
              ext-> checks=131442 recaps=19207 pawns=279 1rep=16948 thrt:597
              predicted=0  nodes=5995072  evals=1149031
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=35%  pawn=98%  used=37%

[cut diagram to create some space]

              time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                6     0.65  -0.02   Nh5 Qe3 Bf6 Bxf6 Nhxf6 Qf4 d5
                6     1.09   0.01   Nh7 Bd4 Ng5 Nxg5 Bxg5 Qg4 Rfd8
                6     1.37     ++   Bxe4!!
                6     1.42   0.74   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4
                6->   1.48   0.74   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4
                7     1.70   0.74   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4
                7->   1.75   0.74   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Nxf6
                                    Nxb6 Rxe4
                8     2.25   0.61   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Bxf6
                                    Bc6 Rxa4 Bxd7 Bxa1 Rxa1
                8->   2.52   0.61   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Bxf6 Bxf6
                                    Bc6 Rxa4 Bxd7 Bxa1 Rxa1
                9     4.00   0.67   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Nxd7 Nxd7 Bc3 Rb8
                9->   4.28   0.67   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Nxd7 Nxd7 Bc3 Rb8
               10     6.97   0.75   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rc7 Rac1 Rfc8
               10->   8.01   0.75   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rc7 Rac1 Rfc8
               11    13.62   0.69   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Bxf6 Nxf6 Nd4 Rb8 Nc4 a4
               11->  17.08   0.69   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Rxe4
                                    Bxf6 Nxf6 Nd4 Rb8 Nc4 a4
               12    30.70   0.72   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rcc8 Rac1 Rfd8 Bc3 a4
               12->  39.21   0.72   Bxe4 Bxe4 Qxc4 Qxc4 Rxc4 Nxb6 Nxb6
                                    Bd3 Rcc8 Rac1 Rfd8 Bc3 a4
              time=39.54  cpu=99%  mat=0  n=8935596  fh=93%  nps=225988
              ext-> checks=71021 recaps=30761 pawns=1618 1rep=2666 thrt:121
              predicted=0  nodes=8935596  evals=1834933
              endgame tablebase-> probes done=0  successful=0
              hashing-> trans/ref=48%  pawn=99%  used=41%

[cut diagram to create space]
             time surplus   0.00  time limit 15:00 (15:00)
         nss  depth   time  score   variation (1)
                7     0.55   0.24   Bf5 Rfc1 O-O a5 Re8 a6 b6
                7->   0.55   0.24   Bf5 Rfc1 O-O a5 Re8 a6 b6
                8     1.26   0.24   Bf5 Rfc1 O-O a5 Re8 a6 b6 Rab1
                8->   1.87   0.24   Bf5 Rfc1 O-O a5 Re8 a6 b6 Rab1
                9     5.05   0.28   Bf5 Rf2 O-O Rd2 Re8 a5 f6 a6 b6
                9->   5.55   0.28   Bf5 Rf2 O-O Rd2 Re8 a5 f6 a6 b6
               10    15.44   0.31   Bf5 Qd2 O-O a5 a6 Rfe1 Bb4 Bb6 Qh4
                                    Rad1
               10->  19.39   0.31   Bf5 Qd2 O-O a5 a6 Rfe1 Bb4 Bb6 Qh4
                                    Rad1
               11    49.98   0.35   Bf5 Rfc1 O-O a5 Re8 a6 b5 Bf2 b4 Ne2
                                    f6
               11->  51.14   0.35   Bf5 Rfc1 O-O a5 Re8 a6 b5 Bf2 b4 Ne2
                                    f6
              time=51.47  cpu=99%  mat=0  n=10746335  fh=91%  nps=208666
              ext-> checks=112770 recaps=33799 pawns=14713 1rep=5698 thrt:15
              predicted=0  nodes=10746335  evals=2



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

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