[Computer-go] "gridcircular" - author/reference help requested

Arthur Cater arthur.cater at ucd.ie
Sun Jun 12 09:34:52 PDT 2011

I cannot remember who/what I read that mentioned a "gridcircular"  
measure of
distance - contrasting with Euclidean and Manhattan. It is something  
max(Hseparation,Vseparation) + ( 1/2 * min(Hseparation,Vseparation) )

If anybody can help, with claiming it, or naming its inventor, or  
especially giving
a reference I can cite in a paper - I'd be very grateful.

(Google is often my friend; but not this time.)


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