Winboard Forum

Not seeming to get egtb enabled with Crafty and Winboard

position:
8/2K5/8/6n1/4k3/7r/8/8 w - - 0 1

White King VS Black King/Rook/Knight
I can mate this no problemo in about 10. (I played black against crafty took about 1 minute out of the five I gave myself and it took 10 turns anyway)
So why does Crafty have to even think about it? Took 30 seconds to come up with the mate when I set analysis mode.

My rc:

log=off
egtb
tbpath=C:\Users\CarterSmith\Downloads\Chess\Tablebases
cache=128M
hash=2048M
hashp=8M
learn=7
ponder=on
swindle=on
resign=10
book random=1
book width=5
exit

Carter Smith wrote:Not seeming to get egtb enabled with Crafty and Winboard
...

Confirmed. It doesn't work here too. Also my standard EGTB test position does not work:

Code: Select all

...
EGTB access enabled
using tbpath=/media/tbs
4 piece tablebase files found
1385kb of RAM used for TB indices and decompression tables
EGTB cache memory =    2M bytes.
max threads set to 1


Crafty v21.5 (1 cpus)

...
White(1): new
parallel threads terminated.
White(1): random
White(1): level 0 45 0
 game/45 minutes primary time control
...
White(1): setboard B6k/8/8/8/8/8/8/N6K w - - 0 1

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

White(1): post
White(1): analyze
              time limit 56.25 (+0.00) (8:45)
              depth   time  score   variation (1)
              time=0.00  mat=6  n=15  fh=100%  nps=1.0M
              ext-> check=0 1rep=0 mate=0 pp=0 reduct=0/0
              predicted=0  evals=2  50move=0  EGTBprobes=2  hits=2
              SMP->  splits=0  aborts=0  data=0/128  elap=0.00
.
              time limit 56.25 (+0.00) (8:45)
              depth   time  score   variation (1)
              time=0.00  mat=6  n=15  fh=100%  nps=1.0M
              ext-> check=0 1rep=0 mate=0 pp=0 reduct=0/0
              predicted=0  evals=2  50move=0  EGTBprobes=0  hits=0
              SMP->  splits=0  aborts=0  data=0/128  elap=0.00
.
... and so on forever

exit
White(1): quit


There was no mate found. Dr. H. please come to the emergency room!

Volker

I decided to take a crack at it command-line style and also got some interesting results.
Perhaps the red marks indicate why it seems a bit slow to me? Could be I downloaded the wrong compile for my CPU. Athlon x2 64 and the file I'm running is crafty_1919-AMD64-smp.exe. Ah well here's my shot as well.

Carter Smith wrote:...

There is no book found. TBs are enabled but not found. Do you have something like

mt 2

in your crafty.rc? That has nothing to do with TBs by the way. Please check the Crafty documentation.

Volker

I know the SMP status has nothing to do with TBs. That was just an observation I made in regards to crafty feeling slow on this computer in analysis mode. A topic from another thread I was just digressing upon here.

I do not have that argument in my .rc either. (rc is shown in first post btw)

Is there a tree depth limit on how deep crafty can find the TB dir perhaps?