Re: [Bug-gnubg] "Joseph-ID" in benchmark db

[Philippe Michel]

On Thu, 9 Feb 2012, Mark Higgins wrote:

> Can anyone point me to a function to convert the keys in the benchmark dbs to a 
> board layout pls?
>
> They don't look like 14-char position IDs, and checking this list archive I see 
> them occasionally referred to as Joseph-ID.

The underlying binary key is the same but gnubg's position ID encodes it 
in base64 while Joseph uses a simpler encoding that translates only 4 bits 
per character.

See for instance 
http://cvs.savannah.gnu.org/viewvc/gnubg/gnubg/gnubg.c?r1=1.905&r2=1.906