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Subject: Re: To Hyatt and the Crafty experts.

Author: Robert Hyatt

Date: 06:59:59 07/07/02

Go up one level in this thread


On July 07, 2002 at 03:01:17, Slater Wold wrote:

>Guess I did something wrong.
>
>Testing other positions (using null_min = 0 & null_max = 2), I get this:
>

Did you make any source changes to the program?  changing null min/max should
not cause such an error.  This is indicative that the PV code is broken and
Crafty is storing bogus moves in the hash table.




>
>EPD Kit revision date: 1996.04.21
>unable to open book file [./book.bin].
>book is disabled
>unable to open book file [./books.bin].
>
>Crafty v18.15 (1 cpus)
>
>White(1): smpmt 2
>max threads set to 2
>White(1): hash 90M
>hash table memory = 48M bytes.
>White(1): hash 98M
>hash table memory = 96M bytes.
>White(1): hashp 48M
>pawn hash table memory = 48M bytes.
>White(1): learn off
>book learning disabled
>result learning disabled
>position learning disabled
>White(1): easy
>pondering disabled.
>White(1): setboard 1r4k1/1q3pp1/r3b2p/p2N4/3R4/QP3P2/2P3PP/1K1R4 w - -
>White(1): go
>              clearing hash tables
>              time surplus   0.00  time limit 30.00 (3:30)
>         nss  depth   time  score   variation (1)
>starting thread 1
>                5->   0.11  -0.36   1. Qc5 Kh7 2. Re4 Bxd5 3. Qxd5 Rc6
>                                    4. Qxa5
>                6     0.16  -0.48   1. Qc5 Kh7 2. Rf4 Rc8 3. Qd4 Rac6
>                6     0.42  -0.18   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qb6
>                                    4. Qc1
>         (3)    6->   0.61  -0.18   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qb6
>                                    4. Qc1
>                7     0.83     ++   1. Nf4!!
>bad move from hash table, ply=747*  1. Nf4
>         (2)    7     1.12   0.42   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7
>         (2)    7->   1.80   0.42   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7
>bad move from hash table, ply=747*  1. Nf4
>                8     2.69   0.40   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7 6. Rd2
>bad move from hash table, ply=847*  1. Qf8+
>bad move from hash table, ply=847*  1. Nc7
>                8->   4.55   0.40   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7 6. Rd2
>                9     5.72     --   1. Nf4
>bad move from hash table, ply=847*  1. Nf4
>bad move from hash table, ply=8
>bad move from hash table, ply=9
>bad move from hash table, ply=7
>                9     8.50  -0.03   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7 6. Rd2 Qc7
>bad move from hash table, ply=107*  1. Nf6+
>bad move from hash table, ply=847*  1. Ne7+
>bad move from hash table, ply=847*  1. Qe7
>bad move from hash table, ply=847*  1. Rg4
>bad move from hash table, ply=847*  1. Nb4
>bad move from hash table, ply=8
>bad move from hash table, ply=847*  1. Qb4
>bad move from hash table, ply=8
>bad move from hash table, ply=8
>bad move from hash table, ply=8
>bad move from hash table, ply=107*  1. b4
>bad move from hash table, ply=847*  1. c4
>bad move from hash table, ply=107*  1. Qb2
>         (3)    9->  21.28  -0.03   1. Nf4 Qc7 2. Nxe6 Rxe6 3. Rd7 Qxh2
>                                    4. Rd8+ Rxd8 5. Rxd8+ Kh7 6. Rd2 Qc7
>bad move from hash table, ply=117*  1. Nf4
>bad move from hash table, ply=9
>bad move from hash table, ply=9
>bad move from hash table, ply=9
>bad move from hash table, ply=9
>bad move from hash table, ply=7
>bad move from hash table, ply=7
>              time=30.42  cpu=397%  mat=1  n=43632809  fh=97%  nps=1434k
>              ext-> chk=2077738 cap=205609 pp=11580 1rep=209649 mate=0
>              predicted=0  nodes=43632809  evals=4748666
>              endgame tablebase-> probes done=0  successful=0
>              hashing-> trans/ref=30%  pawn=99%  used=83%
>              SMP->  split=303  stop=23  data=5/32  cpu=2:00  elap=30.42
>
>White(1): Nf4
>              time used:  30.42
>Black(1):



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