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Subject: Nullmove crap

Author: Rolf Tueschen

Date: 17:57:37 12/18/02


In a new interview M. Feist, programmer of the Fritz gui said the following. And
I simply am shortly before explosion and rofl.

Feist said (after he had explained alpha-beta): nullmoving is with the following
reflection: you look if you can win advantages after you had made two moves in a
row, without the opponent making a move; if then this doesn't lead to advantage
THEN the starting (first of the two) move was crap!

Ok, so far the quote translated roughly by heart.

Hint to the disbelievers under my fellow programmer experts:

So, you would bet with me that I couldn't show you a position where the
"nullmove" - although leading to advantage with a second move for free - would
get into disadvantage in the longer run? Is exactly this meant with nullmove
pruning? And what if that is crap in terms of real chess? And what if exactly in
positional positions this could be shown? Would you still be faqithful to
nullmove pruning or would you start to program in direction of more knowledge?

Second hint: of course you can continue to program the way you can win against
more than enough weaker masters, but is Bahrain not a real shock for you too,
when Kramnik quite easily knocked out DEEP FRITZ simply with superior chess
understanding? Do you really believe that you can gamble your inborn weakness
away (lack of knowledge) because 98% of the players are not able to calculate
exactly and or have too little numbers of chunk knowledge?

(I will stop here, otherwise it becomes confusing.)

With thanks already for any helping answers. Could youplease add nice diagrams
with positions?

Rolf Tueschen



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