Gothmog 0.4.4 (Mac and Linux only)

[Tord Romstad]

Geschrieben von: / Posted by: Tord Romstad at 06 January 2004 11:53:05:

Mac OS X and Linux binaries of Gothmog 0.4.4 is now available from my home
page. The main changes are:

The Mac version is now able to read the same opening book files as the Windows
and Linux versions. Previous Mac versions needed their own book.bin files because
of endianness problems.

More aggressive forward pruning. As always, this is a double-edged sword.
The engine searches (on average) deeper than before, but there are a few positions
where it needs one or two more plies to find the right move.

Lots of information which was pre-computed and stored in lookup tables in
earlier versions is now computed on the fly when needed. You will notice
that the data.bin file has disappeared.

Several minor modifications (mostly tuned parameters) in the evaluation
function. The most important change is that the bishop pair bonus has been
increased.


I still don't have enough data to guess whether this version is really stronger
than 0.4.3 (I think it is, but the difference is small). Therefore, I don't
release a new Windows version this time. I'll wait until I have something which
I am convinced is clearly better than 0.4.3. My main reason to release 0.4.4
now is the first item on the list of changes above: I finally have a Mac OS
executable which understands the new opening book format in 0.4.x.
Tord