Neurosis 1.81

[Stan Arts]

I would like to announce I've released a new Neurosis version.

Version 1.81 . (I will stay in the 1.8 range for now, because I'm thinking of
a big rewrite, and that would become 2.0) It's the version I used the second
weekend at Leiden.
Compared to 1.8 it's searching some 50% faster and has a better branching-
factor, and more knowledge. (most important change is that it knows more about
subtle starting attacks, so it can hopefully spot them earlyer, and create more
chances for itself, and that it has better understanding of passed pawns.)

Even though it's searching faster, it's nps have dropped a bit. I've changed
how some of it's important extentions work, and they are now more selective but
also slower. Also, instead of counting all the actual pseudolegal positions
created in the searchtree, now I count only fully legal chesspositions for
nodes.

I've put my big, wide and unpredictable openingbook in the package again, for
interesting and entertaining chess, but if you would like to play with Neurosis
in a serious tournament, please tell me so I can send my new self-hand-written
opening book. It will hopefully leave Neurosis in more solid positions. Maybe I
will put it online soon too.

There is also a new 3D version, it has the same improvements as the winboard
version, but I did not work more on my GUI itself this time.

Available from my page.:
http://www.geocities.com/tasteofinsanity81/stanspage

And hopefully also soon from Leo Dijksman's WBEC website.: (thanks Leo!)
http://wbec-ridderkerk.nl/

Hope you will enjoy.

Greetings
Stan