Author: Leen Ammeraal
Date: 09:45:30 12/06/00
I have the impression that most chess programmers use their hashtables to store only one evaluation value, along with a flag denoting Lower, Upper, or Exact. Why not store both a lower and an upper bound, where lower = -inf or upper = +inf if only one real bound is available? A flag is then superfluous, since this follows from the two bound values. For example: LB UB Flag value (not stored) -inf 100 Upper -20 +inf Lower 30 30 Exact This also offers the possibility to store two different bounds at the same time, as in LB = -50, UB = 70. This is the way I do it, but, unfortunately, my program is weaker than most others. Could this be because this idea of storing two bounds and no flag is wrong? Leen Ammeraal
This page took 0.05 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.