[BLML] Law 78, Neuberg and Ascherman
swillner at nhcc.net
Wed Apr 16 15:50:43 CEST 2014
On 2014-04-16 8:50 AM, Peter Smulders wrote:
> Nothing is said about how to convert the matchpoints to a percentage score,
No one needs to do this.
> let alone how to do this in case of boards with different tops.
Another lacuna is what to do when contestants play differing numbers of
> Is it not time that Ascherman and Neuberg are explicitly incorporated in
> the laws?
Perhaps there should be default rules in the Laws, but RAs should have
authority to adopt their own. There is no mathematical basis for
Ascherman/Neuberg (technically they are biased estimators), and I don't
know that anyone has a proper formula. Just as an example, present
arrangements for handling differing tops and differing numbers of boards
are contradictory. I think it should be possible to derive a proper
formula based on Stein's Paradox, but so far as I know, it hasn't been
done. In the meantime, Ascherman/Neuberg is a reasonable approximation.
More on this subject is at
> I have put some notes on this subject on the internet, showing that
> Neuberg and Ascherman are not all that difficult to understand, see
I agree with you that they are not difficult to understand or apply.
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