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Subject: How to evaluate piece mobility in non-bitboard engine?

Author: Vladimir Medvedev

Date: 04:51:31 11/14/02

I want to add mobility terms into my engine's eval function, but it seems to me
rather unclear.

The primitive way, generating (pseudo-legal) moves in leaf nodes coasts very
much. Checking for move legality will be much more expensive, but without it I
can't evaluate mobiity decrrease for pinned pieces...

I also tried to evaluate mobility as the last branching factor on the line
before the qsearch begins, but it seems to be too rough estimation, isn't it?

I think, in bitboard engines mobility can be evaluated in some simple way, but
how to do this for my "field array + piece lists" board structure?

• Re: How to evaluate piece mobility in non-bitboard engine? Tom Likens 08:58:00 11/14/02
  • Re: How to evaluate piece mobility in non-bitboard engine? Uri Blass 09:15:46 11/14/02
    • Re: How to evaluate piece mobility in non-bitboard engine? Tom Likens 10:43:57 11/14/02
• Re: How to evaluate piece mobility in non-bitboard engine? José Carlos 05:42:36 11/14/02

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