TalkChess.com

[Michael Hoffmann]

Hello everyone,

just to give my 2 cents on that topic, i want to give an idea i used
a while back (and maybe i do it in future again).

_Similar_ to king safty approach (like fruit uses), hanging pieces
can be counted and weighted. This works pretty fast because
mobility(attacks) have to be simply masked to get attackers on that square,
so the attackcounter is incremented and a weight counter will
be summed up too. Finally you can compute from these 2 values a
score, just like many of you do with king safty, the same technique.

So the overhead is minimal, it is fine to tune and easy to implement.
The tradeoff between accuracy and speed is of course a matter of
taste, but it is just another way to handle hanging pieces, and _can_
be used as good evaluation heuristic.

maybe someone wants to try it out for himself

Michael