Author: Christophe Theron
Date: 09:30:59 06/16/02
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On June 16, 2002 at 01:21:15, Pham Hong Nguyen wrote:
>>Chess Tiger for Palm and Chess Tiger for PC share the same engine code.
>
>I think Chess Tiger is one of good and lucky engines to move into Palm because
>of nature of your design. Many other engines will find so many difficulties. For
>example, some have to rewrite their assembly codes or remove them. Cache for
>handhelds is also different from PC (so many optimizations based on cache will
>not work). Some advantages of bitboard design will be lose comparing with other
>designs.
Actually the base engine for Chess Tiger for Palm was the PC version 12.0.
I had to change some basic data structures in it so it worked better on the Palm
(notably the move data structure was on 32 bits, I changed it to 16 bits). But
the changes has been good for the PC version as well: the PC version ran faster
after the changes designed for the Palm.
>One of terrible things I have seen that poor programs for handheld may be
>undersearch (search depths are so shallow for fast games, say 3-5 depths) and
>may make many fatal mistakes on tactics.
That's also what makes it challenging!
Christophe
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