[r-t] in-course 120

Alexander Holroyd holroyd at math.ubc.ca
Thu Oct 12 16:42:41 UTC 2006

Thanks for all these nice solutions to the question!

Now who can come up with a nice triples principle yielding an extent in 
B-blocks, where a B-block is one of these 120s?  (Where 11-pull dodges in 
67 in the plain course does not count as "nice"...)

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