Author: Anthony Cozzie
Date: 08:49:36 12/26/03
Go up one level in this thread
On December 26, 2003 at 07:28:52, Tord Romstad wrote: >On December 25, 2003 at 11:52:25, Peter Fendrich wrote: > >>I compare and move around moves all over the place and therefore like the int >>format better. > >That's why I want to change to the int format, too. The functions to convert >moves >between the two formats hardly shows up on the profiler output, but it would be >much >cleaner to simply avoid all these conversions. > >>BTW the new program that you're mentioning is that the palm version or have you >>started a complete replacement of Gothmog? > >Yes and yes. Gothmog is full of old, stupid design decisions which makes many >of >my current ideas difficult or impossible to implement without a major rewrite. >At the >same time, I'm trying to make the new code more compact than the old, and to >reduce >the memory requirements enough that the engine is able to run on handheld units. > >Another goal in the new engine is to include support for Glinski's hexagonal >chess >in addition to normal chess. IMHO, hexagonal chess is a much more interesting >game >to play, and also a slightly more challenging game to program. > >>I'm thinking about starting a replacement to Terra with a 180 degree different >>approach. Combined bitboard and 16+16 board, more knowledge intensive, another >>search approach and possibly some learning abilities. > >I'm heading towards the same spot, but from the opposite direction. :-) > >I use a 16x16 board and no bitboards in Gothmog, but I consider adding some >bitboards >in my new engine. > >>It's only in the design phase sofar... > >My new project is at the same early stage. > >Tord IMO every chess engine should have white/black/allpawn bitboards. Whether rotated and piece bitboards give you more bang for the buck than attack tables is much more nebulous. Attack tables are definitely better on 32 bit processors, but now that the Opteron is here . . . anthony
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