Your task is to place the consecutive series 1 to 14
around this heptagon, using one number to each circle, such that
each of the seven sides (of three circles) adds up to a constant of
26. It's quite a tough proposition, so I have correctly placed the
14 already, to give you a start.
Obviously each of the seven numbers occupying the seven nodal
circles will be counted twice. The other seven interior circles
will be counted once.
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