Author: Ross Boyd
Date: 23:35:29 10/03/05
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On October 03, 2005 at 18:43:42, Tord Romstad wrote: >On October 03, 2005 at 17:46:14, Ross Boyd wrote: > >>On October 03, 2005 at 17:02:27, Tord Romstad wrote: >> >>>Hi all, >> >> snip >>> >>>In the next version, I hope to implement pondering, engine >>>configuration and engine vs engine matches. Wishes for other >>>new features are welcome. >> >>Yes, I have a request. >> >>Please make all future versions of Scatha (and any other engine you write) about >>200 Elo weaker. > >Hey, TRACE needs that feature just as much as Scatha! Now come on Tord, lets not get carried away. ;-) >But seriously, I am thinking about it. One of the countless things >I want to do when I have some more time is to find a good way >to emulate human tactical mistakes, and use this to adjust the >playing strength. I've had a user request for this feature. To be honest, it goes against the grain after toiling so hard for a handful of elo here and there. However, I plan to honour the request when T2 is released which is still a long way off yet. As you indicate, its not as simple as randomly pruning moves from ply 2. My user suggested two approaches. 1. Make the search depth random between two adjustable depths- for example 3ply and 6ply. Apparently this method is used in Crafty SE... 2. Make the engine choose ply 1 moves randomly but within a certain score range of the best move... so it would occasionally play poor moves that lead to lower positional scores without throwing pieces away. My view is that a good sparring mode is one where the engine allows an occasional not-too-obvious combination against itself. Also, the engine should play generally weaker as its root score increases and stronger as its score decreases... so that it puts up some resistance and forces the human to push home the win. All the best with Scatha! Ross
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