Yes, it is indeed possible, no I didn't do it at all methodically, so I haven't a clue how it was actually done, or indeed any idea how to prove it can't be. I hate trying to prove things I already know to be false anyway.
And you're right, 36 is do-able without cheating. Bit of a nuisance having to do 1-35 again to prove it to myself though :-)
And you're right, 36 is do-able without cheating. Bit of a nuisance having to do 1-35 again to prove it to myself though :-)