Author: Pham Hong Nguyen
Date: 17:58:12 06/17/02
Go up one level in this thread
On June 17, 2002 at 12:37:54, Christophe Theron wrote: >On June 17, 2002 at 00:59:45, Pham Hong Nguyen wrote: > >>On June 16, 2002 at 12:30:59, Christophe Theron wrote: >> >>>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. >> >>Curious questions: is it bitboard version or not? In general, what full depth it >>could reach for fast game (say 10 min/game, in Palm)? Thanks. > > > >Chess Tiger does not use bitboards. That's why it runs fine on 16 and 32 bits >processors (and will still run fine on 64 bits ones). Amazing, because I have read somewhere that you have used bitboard for current version and say good bye to non-bitboard world ;) > >In 10mn/game on my Palm it will reach 5-6-7 plies typically. > >That means that some variations are cut at 3 or 4 plies, and some others are >extended to 20 plies (or more). > >From what I have seen so far with the SSDF tests, Chess Tiger for Palm could be >a little bit under 2100 SSDF elo. Thank you very much for your answers. My engine does not use bitboard either. You make me feel much more confident about how strong a non-bitboard engine could reach :) Another curious and important question (for me): do you use attack table? Currently, I don't use that table because it is very expensive for non-bitboard one and I am still wondering if it should be implemented (I have implemented once and then removed it immediately because of slowness). Your advice will help me much. Many thanks in advance :) PHN > > > > Christophe
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