Xboard and polyglot: getting two engines to use a book

[royb]

I'm trying to run a match between two engines using Xboard on my Linux system. I've got polyglot 1.4-3 installed on my system.

The polyglot.ini file for glaurung shows these entries (related to opening book stuff):

Book = true
Book File = /home/roy/chess/glaurung22/Book.bin

Similarly for the other engine (in this case, rybka-3) which has its own separate directory and polyglot.ini file.

Neither engine will use a book though when the match is started with this command:

xboard -size bulky -tc 5 -inc 10 -xponder -mg 25 -fcp /home/roy/chess/rybka-3/polyglot -fd /home/roy/chess/rybka-3 -scp /home/roy/chess/glaurung22/polyglot -sd /home/roy/chess/glaurung22 -sgf /home/roy/chess/glaurung22-vs-rybka3-games.pgn

The file Book.bin sits in /home/roy/chess/glaurung22 and also in /home/roy/chess/rybka-3 .

Can someone point out my mistake here? The file polyglot.ini sits in the same directory as the polyglot command (in this case, polylgot the binary is duplicated in each engine's directory).

Thanks for someone with either sharper eyes or more knowledge about using polyglot opening books in an Xboard setting.

Roy

[hgm]

If you want Polyglot to use its book, don't you have to set the option OwnBook = false, or something like that?

[govert]

Book = true
Book File = /home/roy/chess/glaurung22/Book.bin

Try "BookFile" insted of "Book File"

if that does not work, see the rest of the post

These entries are in the [Polyglot] section of the ini file, right?

Are you sure the Book.bin is in polyglot format?


Adding OwnBook=false in the [engine] section shouldn't matter, but who knows... it certainly wouldn't hurt

Personally, I have a slightly different setup, but I don't see why your way doesn't work.

For each engine I use a wrapperscript x[Engine] wich just contains:
"polyglot [path_to_engine_ini_file]"
So in your case :
% cat /home/roy/chess/rybka-3/xRybka
ployglot /home/roy/chess/rybka-3/polyglot.ini

% cat /home/roy/chess/glaurung22/xGlaurung22
ployglot /home/roy/chess/glaurung22/polyglot.ini


I usually put that script in the same directory as the engine binary and engine ini.

I invoke xboard with:
xboard -mg 25 -fcp /home/roy/chess/rybka-3/xRybka -scp /home/roy/chess/glaurung22/xGlaurung22 -sgf ...

[royb]

Book = true
Book File = /home/roy/chess/glaurung22/Book.bin

Try "BookFile" insted of "Book File"

if that does not work, see the rest of the post

These entries are in the [Polyglot] section of the ini file, right?

Are you sure the Book.bin is in polyglot format?


Adding OwnBook=false in the [engine] section shouldn't matter, but who knows... it certainly wouldn't hurt

Personally, I have a slightly different setup, but I don't see why your way doesn't work.

For each engine I use a wrapperscript x[Engine] wich just contains:
"polyglot [path_to_engine_ini_file]"
So in your case :
% cat /home/roy/chess/rybka-3/xRybka
ployglot /home/roy/chess/rybka-3/polyglot.ini

% cat /home/roy/chess/glaurung22/xGlaurung22
ployglot /home/roy/chess/glaurung22/polyglot.ini


I usually put that script in the same directory as the engine binary and engine ini.

I invoke xboard with:
xboard -mg 25 -fcp /home/roy/chess/rybka-3/xRybka -scp /home/roy/chess/glaurung22/xGlaurung22 -sgf ...

I got it working now.

The answer was to use "BookFile" instead of "Book File".

Thanks for your help!

Roy

[govert]

no problem!