📝Greg Strong wrote on Wed, Jul 20, 2005 02:02 AM UTC:
The setting of I-Depth 9 is just the maximum depth. The way it works is
that it searches all moves to a depth of 1, and then, if there's time, to
a depth of 2, and, if time, to a depth of 3, etc... So it never hurts to
have the Max I-Depth set high. The only reason that setting is there is
so that, if you want to do a fixed-depth search, you can set the I-Depth
to the depth you want, and set the time limit to something really high.
And, strangely enough, searching to a depth of 1, then 2, 3, ..., n is
actually faster than going straight to depth n. This technique is called
'Iterative Deepening', and is used by all chess programs.
Giving pincer pawns a bonus for being a knights-move away from others
might be a good idea. I might give it a try sometime and see how it
works.