[r-t] Grandsire Triples

edward martin edward.w.martin at gmail.com
Fri Aug 31 19:08:05 UTC 2007


Each of these depends on the one plain lead q-set (as far as row types
are concerned) as does a 12 part on the three-lead plan, but these are
certainly a step up from that. However, looking at the first, I see
that it allows for the 5040 to be set out in six 3-course blocks, but
there appears to be no way of joining these together. As I've set them
out, by swapping singles for bobs, you can join the 1st block of 3 to
the 4th; the 2nd to the 5th; and the 3rd to the 6th, but that's it!

mew

On 31/08/2007, John Goldthorpe <johng at omnieng.co.uk> wrote:
> Robert Lee wrote:
> >
> > 2) a 20 lead block giving a regular (ditto) 18 part peal (using
> > permutations of 2-4 and 5-7)
> Some 20 lead blocks are possible using permutations of 245 and 367.
> These are the ones that don't finish with rounds:
>
> PBSBSBBSSPBSSPBBPPBB = 1264573
> PBSSBBSBSPBSSPBBPPBB = 1264573
> PSSBSSPBSSPSSBSSPPBB = 1264573
> SSPBBPPBBPBSBSBBSSPB = 1435267
> SSPBBPPBBPBSSBBSBSPB = 1435267
> SSPSBBSBPPBBPBSBBSPB = 1435267
> SSPSSBSSPPBBPSSBSSPB = 1435267
>
> John
>
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