[r-t] New doubles extents
richard at ex-parrot.com
Fri Oct 9 12:47:59 UTC 2009
Alexander Holroyd wrote:
> On Wed, 7 Oct 2009, Richard Smith wrote:
>> Something similar appears not to work in Carter because
>> all three possible double changes appear in both 'slots',
>> and there is no single change which contains places in 1,
>> 3 and 5.
> However, the Cramboing trick does work on Carter, and
> indeed on any in-course 60, as Robert Johnson proved a
> while back.
Yes. However the Tendring trick produces more elegant
methods as it doesn't break the method's symmetry as
the Crambo trick usually (always?) does
I do wonder, though, whether the Tendring trick can be
generalised in any useful way to something that will work
for all in-course 60s.
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