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Subject: Re: computers are soo strong - haha

Author: Jonas Cohonas

Date: 18:52:41 03/22/03

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On March 22, 2003 at 13:07:02, Thomas Lagershausen wrote:

>[D]rn1q1rk1/1p2bppp/p1bp1n2/4p3/4P3/1NN1B3/PPP1BPPP/R2Q1R1K w - - DeepJunior had
>played the weak 11.Bf3? in game 6 against Kasparov and black was more than
>fine.According to GM Yasser Seirawan computers are player with a elo 2400 but
>make no easy mistakes.That´s all.

The fault in that argument, which makes it quite ridiculous when you think about
it, is that a 2400 human GM who never made any mistakes, would be rated much
higher (we call them super GM's, they hardly ever make any positional mistakes,
but when compared to comps they are 2400 in tactics under normal tournament TC
and even worse in blitz :)

ELO is not a static way of measureing playing strenght, it measures your
performance based on your opponents rating, which he got from the same system,
therefore there is no way to take out the 2400 strenght measure and then add
perfect play in tactics without trying to guesstimate what the rating of the
computer would then be!

If we should use static ELO measures loosely just for the heck of it, it would
look something like this:

Kasparov:
Opening strenght     2900
Middlegame strenght  2750
Calculation strenght 3000 (finding a plan that is sound in short and long terms)
Tactics              2650 (high for a human)
etc.                 =2825 in total

This is of course more an illustration of my point than a scientiffic
meassurement, the same should apply to computers when talking about their
strenght and weaknesses, the # 2400 in itself has no meaning unless you have the
win/loss/draw ratio of games against enough opponents with different ratings.

In other words we can say without a shadow of a doubt that Deep Junior's
performance rating against Kasparov was 2837, i am sure that if Yasser drew a 6
game match against Kasparov he would agree :)

Regards
Jonas



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