Author: Tord Romstad
Date: 14:29:46 01/02/01
Go up one level in this thread
On January 02, 2001 at 09:06:20, Christophe Theron wrote: >On January 02, 2001 at 06:52:46, Tom Glenn wrote: > >>On January 01, 2001 at 19:29:38, Christophe Theron wrote: >> >>>>>Rank Program C rating >>>>> 124 Fidelity Mach III 68000 16 MHz 1993 14 2410 52% 1980 >> >>> >> >>> >>>I also think (correct me if I'm wrong) that the Mach III has hash tables, and >>>Chess Genius for Palm has none. >> >> >> >>........ the old ad says... "includes hash tables 8,000 positions" >> >> In theory , what could a program be rated (SSDF) on a device like >> this , given the physical limitations ? (33MHz , and if the total >> program isn't over 4-5 mg) > > > >I think the answer is between the two following lines: > > 86 Mephisto Lyon 68030 36 MHz 2151 28 -27 716 68% 2016 > 111 Mephisto Berlin 68 000 12 MHz 2015 22 -22 986 57% 1966 > >I take Lang's programs as reference as they are known to be well optimized for >680x0 processors. > >The DragonBall processor is close to a 68000 (at the same clock frequency). So >the Mephisto Lyon @36MHz would be above, and the Mephisto Berlin is clearly >below. > >My best guess is the rating of the Berlin on 68000 @12MHz + the elo difference >you get by speeding up the processor to 33MHz (that makes >70*log(33/12)/log(2)=102 elo points). > >So it would be rated 2117 elo (SSDF). This does not account for software >improvements that have been done since the Berlin, maybe 50 to 100 additional >points? I don't know... I am afraid the truth is precisely the opposite --- the chess engine in Chess Genius for Palm is probably significantly weaker than the one in Mephisto Berlin. The engine in Chess Genius, I have read, is the engine of the very old Mephisto Roma (1987, I think), which was the last Lang program which did not use transposition tables. The engine in Mepisto Berlin is basically a port of Chess Genius 1 for the PC (released some time during the years 1991--1993). The best way to estimate the strength of Genius for Palm is proably to look up the rating of Mephisto Roma on the SSDF list and add some points for the faster hardware. Please note that this is all based 100% on what I have read from various sources, I have never seen Genius for Palm in action myself. Tord
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