[r-t] Extents with two fixed hunt bells

Nicholas Small smalls at girvian.freeserve.co.uk
Tue Apr 7 20:03:24 UTC 2009

Some time ago, in response to a query from me, Richard Smith produced some doubles principles with three lead extents. After 40 
changes, two bells are home, having occupied each possible pair of positions once.

For a major method that could produce an extent without affecting the two hunts, the number of changes in a division/lead would 
have to be a multiple of 56.

Nicholas Small

(Apologies if this has been mentioned already - I'm a couple of weeks behind with
the digests.) 

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