Author: Robert Hyatt
Date: 07:25:52 11/25/03
Go up one level in this thread
On November 25, 2003 at 10:23:20, Robert Hyatt wrote:
>On November 25, 2003 at 09:44:29, Peter Berger wrote:
>
>>On November 25, 2003 at 09:26:20, Robert Hyatt wrote:
>>
>>>On November 25, 2003 at 09:16:45, Peter Berger wrote:
>>>
>>>>For information about setup and rules:
>>>>http://www.talkchess.com/forums/1/message.html?329237
>>>
>>>What book are you using? 1. f4 is hardly an ideal opening for a computer
>>>to play, and it is something Crafty would _never_ play against another
>>>computer. Do you have a bookc.bin or books.bin file???
>>
>>I have both. I use the book.bin, bookc.bin and books.bin file offered for
>>download at ftp://ftp.cis.uab.edu/pub/hyatt/common/.
That might be the problem. You really should download the book files
from the appropriate version directory. IE the .bin files from the v19
directory. I'll remove them from the common directory as I don't even
know what those are. The problem is that the book format (.bin files)
has changed more than once, making the files incompatible with older
versions. As a result, I try to keep the working files in the directory
with the sources that work with those files...
That probably explains the f4 opening now.
>>
>>It was something Crafty played against another computer in this case.
>
>You have a problem. What GUI are you using? IE probably not winboard or
>xboard, which would send "computer" to crafty. If you start Crafty, and
>type the following:
>
>crafty
>computer
>show book
>ponder=off
>go
>
>you should see this:
>
>Crafty v19.6 (1 cpus)
>
>White(1): computer
>playing a computer!
>White(1): show book
>show book statistics
>White(1): ponder=off
>pondering disabled.
>White(1): move
> clearing hash tables
> after screening, the following moves can be played
> move played % score learn CAP sortv P% P
> d4! 503991 33 0.25 0.00 -655.36 13402.8 50 Y
> e4! 712147 47 0.25 -0.05 -0.07 13401.0 50 Y
> Nf3 121355 8 0.11 0.11 -655.36 5372.6 0 Y
> c4 113930 7 -0.15 0.12 -655.36 5161.0 0 Y
> h3? 166 0 -0.18 0.47 -655.36 3030.1 0 N
> d3? 809 0 0.22 0.28 -655.36 2313.3 0 N
> g3? 11758 0 -0.17 0.20 -655.36 1468.1 0 N
> b3? 5794 0 -0.17 0.12 -655.36 989.1 0 N
> b4? 8778 0 -0.14 0.08 -655.36 788.0 0 N
> e3? 1651 0 0.22 0.00 -655.36 667.4 0 N
> Nc3? 4144 0 0.11 0.00 -655.36 560.9 0 N
> Nh3? 110 0 0.01 0.00 -655.36 455.3 0 N
> Na3? 74 0 0.01 0.00 -655.36 455.2 0 N
> f4? 8908 0 -0.03 0.00 -655.36 427.6 0 N
> f3? 162 0 -0.06 0.00 -655.36 385.3 0 N
> g4? 1237 0 -0.14 0.00 -655.36 306.9 0 N
> a3? 599 0 -0.18 0.00 -655.36 266.0 0 N
> c3? 391 0 -0.18 0.00 -655.36 265.7 0 N
> h4? 161 0 -0.15 -0.02 -655.36 177.7 0 N
> a4? 167 0 -0.15 -0.07 -655.36 -116.4 0 N
> book moves {d4, e4}
>
>Notice _no_ f4. That is using the book.bin, books.bin and bookc.bin
>from my ftp machine. You could look at the crafty log.nnn file to see
>if you see the "playing a computer!" message from Crafty. If not, there
>is a problem...
>
>I just tried this under xboard on linux and it works perfectly... IE
>xboard sends a "computer" command to crafty at the start of any game
>played against a -scp (or -fcp) opponent...
>
>
>>
>>In the logfiles it says: "playing a computer!" in all games. When I start it in
>>text mode it also points out that it finds a bookc.bin file (this is not logged
>>in general in either text or WinBoard mode).
>>
>>The game logfile suggests that it will play 1. e4, 1. d4 and 1. f4 as white.
>>If I start crafty in text mode, say "show book", and "move" the output suggests
>>it will only play 1. e4 and 1. d4.
>>
>
>That almost seems like the two book files are reversed. IE if you start
>crafty in console mode, and type "show book" and "move" you should see
>three playable moves including f4. After also typing "computer" and
>then "move" you should only see e4 and d4...
>
>
>if you see e4, d4 and f4, one of two things is happening. Either the
>computer command is missing, or you don't have a good bookc.bin. You might
>diff your bookc.bin and books.bin. If they are the same, that is the problem.
>Just re-download the bookc.bin from my ftp site (dated 2002 in the v19
>directory) and that should fix it...
>
>
>
>
>>So maybe there is some bug in Crafty 19.4 in XBoard mode - I use it with
>>WinBoard 4.2.6. If there is additional information I can provide, please tell
>>me.
>>
>>Anyway - the opening didn't seem to be the problem in any game so far.
>
>No, but f4 is not a particularly good opening to play against computers which
>is why it is not part of Crafty's normal opening choices when playing against
>a program.
>
>
>>
>>Peter
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