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Subject: Re: Junior 8 doesn't see this simple mate

Author: Sune Fischer

Date: 14:27:05 08/21/03

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On August 21, 2003 at 17:21:06, Uri Blass wrote:

>>If you had a pruning rule that gained 50 elo in all games but made blunder moves
>>every time there was a quadrople pawn on the board, would you do the pruning?
>
>I believe that if I have that pruning rule then I can easily change it not to
>make the blunder without significant difference in strength.

But for the sake of argument, suppose you couldn't.
Which is more important to you?

>pruning rule basically say to search to reduced depth.
>I see no reason not to search at all if you are not sure.
>
>Junior decides not to search at all.

No Junior thinks one side can't win and adjusts bounds, it has nothing to do
with reducing depth.

>The gain from deciding that bishop cannot win could still be almost the same
>after modifying this rule to do verification search to depth d/4 when the
>remaining depth is d and only after this search to decide that a bishop cannot
>win.

In which case the mate is going to need 40 plies, so you'll miss it anyway.

>It is even possible that in that case Junior may be 1 elo stronger

Or 1 elo weaker :)

-S.
>Uri



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