Author: Robert Hyatt
Date: 10:03:53 07/13/99
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On July 13, 1999 at 04:00:04, Shep wrote: >On July 12, 1999 at 20:30:06, Gustavo Pereira wrote: > > >>Remember that node count is not a very valid way to account for a program's >>strength, take LGG2.05 as an example, I have seen it speeding far away from >>Fritz, yet it is not a very good chess playing program, it is an excellent >>problem (tactics!!) solver. > >LGG2 is probably the program with the most differing nps counts of all. >I have seen it hit anywhere between 200 K and 1,300 K on the PIII-550. >(No other program I know differs by a factor of more than 3.) >Whenever there are tactical shots in the position, LGG's node count explodes >whereas it remains low in positional situations. >Is there any explanation on why this happens? > >--- >Shep probably move ordering. In tactical situations, move ordering is wrong... which makes the nps go up. in non-tactical positions, ordering is better, which makes the search more efficient, but the nps drops... I think most of us see this to some extent...
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