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Subject: Re: What is horizon effect?

Author: David B Weller

Date: 09:22:19 01/30/06

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[quote]
But the main point here is that "the horizon effect" is something the computer
search actively "uses" to hide things that are unpleasant.  It is not something
that "just happens" because it can't search deep enough.
[/quote]

Any threat too! If search doesnt like the place it is in, just threaten to take
a piece which must then evade.

So between 1. checks [already covered by check extension] and 2. captures[
covered if using recap ext] _AND_ 3. simple threat moves [which it turns out are
so numerous its hard to extend all them without explosion] This horizon effect
is _all over the tree_!

This is exactly why I think it is important to find a way of identifying when
the search may be _decieving itself' and 'using' this

When might this phenomena be more or less likely, with reference to, say, eg
alpha/beta bounds or draft or ply?



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