Author: Robert Hyatt
Date: 12:54:03 01/24/00
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On January 24, 2000 at 14:04:01, Ernst A. Heinz wrote: >>> [...] >>> >>>Hitech isn't a lot weaker, if it is any weaker. It was a very strong program, >>>it just was the wrong hardware design to 'keep up' with general-purpose computer >>>advances. I would put hitech on a par with today's programs, or at least with >>>programs on machines prior to the 500+mhz machines. Hitech was very fast and >>>had a good search... >> >>Having watched and played Hitech in Hong-Kong, I estimate its strength to be >>slightly lower than the top micros on '95 hardware, i.e. about SSDF 2350. >> >>Amir > >I completely agree with you on this point, Amir. > >"Hitech Hong Kong '95" searched around 150K nps and reached >iteration depths of 8-9 plies in the middlegame. > >On of the main problems with its hardware was that it did >*not* support futility pruning which made it lose at least >one ply in overall iteration depth. > >=Ernst= Sure, but it did full singular extensions and the rest of the things we were all doing then. I don't use futility pruning now. I am convinced it is too risky after fiddling with it for a couple of years. Null-move by itself has enough interesting problems for me to handle... HiTech certainly had a USCF type rating of around 2400... I don't think programs of 1995 were at that level, or at least certainly not beyond it...
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