Author: Robin Smith
Date: 17:55:15 06/11/00
I have heard it said before in this newsgroup, that the reason PV's that are displayed sometimes have nonesense moves, moves that give up material for no reason for example (I have even seen ILLEGAL moves displayed in PV's!), is that hash tables allow a program to know WHAT the evaluation of a position is but not HOW (true PV) it came about. Is there ANY way to have programs only show those moves that can be KNOWN to be part of the PV that leads to the eval being displayed? The reason I ask is that I think the present way of displaying PV's is misleading to non-programs such as myself. One often hears comments like "the computer plays the right move, but for the wrong reason". Probably many times it is for the RIGHT reason, but the PV that was displayed does not display the reason. Anyway, I think NO information is usually better than WRONG information. I would much rather see a short but accurate PV than a long and misleading one. I mean to say, ILLEGAL PV's?? Come on. It must be possible to do SOMETHING better than this! Programmers out there, what are your thoughts? Also, any estimates as to what percentage of displayed PV's DO and what percentage DON'T display the correct moves (the line that leads to the eval being displayed)? Robin Smith
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