Author: Keith Evans
Date: 21:54:39 07/28/03
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On July 29, 2003 at 00:31:17, Robert Hyatt wrote: >On July 28, 2003 at 20:59:24, Vincent Diepeveen wrote: >>It is like comparing a sniper rifle from 2003 with a sniper rifle from world war >>1. >> >>Distances they shot at in world war 1 and 2 with sniper rifles must have been a >>few hundreds of meters. > >In WW1 my grandfather was a sniper. He shot at ranges up to 1000 yards. > >In WW2 my father was a sniper. He shot at ranges up to 1000 yards. > >Today, a neighbor down the street is a sniper. He shoots at ranges up to 1000 >yards. > >_nobody_ shoots a sniper rifle at ranges of "kilometers" today. "kilometer" >perhaps. With an occasional attempt at up to 2km with a big 50 cal "rifle". > Supposedly Gunnery Sergeant Hathcock took out an NVA at 2500 yards with a .50 caliber machine gun. A friend got into the whole "Marine Sniper" scene and it was a little scary. Nice skill to have if you need it, but it scares me when people fantasize about it. (Especially when the word "safety" is spelled incorrectly at the range ;-) >This is just another area where you know nothing, but write as though you are >an expert. > >BTW, Hsu's move generator is _not_ a lot better than Belle. All you have to >do is read his paper to see what he did... Hsu did add some modes which Belle did not have. For example finding checking, check evasion, and attacking moves. He hints at some other things like generating moves for pruning but this is very vague. He may have handled those basic special case moves (castling, ep captures) more elegantly, but it's hard to tell without seeing the implementation details of each. Hsu also added hardware repetition detection which is not part of the basic move generator logic, but if you group it with movegen just for the sake of argument then it's a noteworthy improvement. Maybe the adjective that Vincent used was a little extreme, but this statement doesn't bother me too much. -K
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