ColonelFazackerley I made this was possible before posting. Having trouble doing it again... " I have discovered a truly marvelous proof of this, which this margin is too narrow to contain."
Tom ColonelFazackerley Being able to post solutions simultaneously with puzzles would be a good feature.
ColonelFazackerley phew... there is quite a lot of subtlety in the balance, rigidity, wobble timing...