Author: Uri Blass
Date: 10:37:10 07/22/03
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On July 22, 2003 at 11:24:13, Mridul Muralidharan wrote: >Hi, > > Just wanted to know how many "slow" engines are present in current computer >chess world that are undergoing active development (like the programmer dusting >the code every month or so ;) ) ? >Here , I mean slow by design and not due to lack of good algorithms or >unoptimised code. > DIEP is one sure for sure , so is mine (messchess). >Any others ? Movei seems to be something between slow and moderately fast by your definition(it is close to shredder7.04 in nps). I am still in the process of adding arrays to it. It may be slower because of them but I am not sure because new arrays may also save time in parts of the program. > >Basic idea - detailed qsearch , heavy move ordering , big eval , etc. >Stuff that may reduce your nps. > >Just to give an objective comparison to differentiate the "slow" from others. >On an athlon 2400xp , for a typical middle game position : > >slow engines >Messchess about 40knps. >Diep about 80knps. > >moderately fast to fast >tiger about 250knps >crafty 400 knps >fritz about 500 knps > >Very fast >Junior about 900 - 1000 knps !! :) > > >Thanks for the info, > >Regards >Mridul > >PS : Just because an engine has low nps need not directly translate to poor >chess or low depth :) Of course I see no reason to assume it. Why not suggest that high nps translate to poor chess and low depth? I think that it make more sense. One reason that my design deision is for slow engine is that I believe that this design can help the engine to be better in tactics. Another advantage is that after doing it strong in tactics with small nps it is also possible to add evaluation with almsot no price. Uri
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