The Green is another eminently pocketable puzzle where the aim is immediately obvious: on the underside there’s a slidey-tray with a coin captured in it – so free the coin! That slider carries the coin backwards and forwards, but there’s no obvious way for the coin to come out… good start!
On the top of the puzzle, there’s some interesting looking
things to play with: a knob in the centre will rotate and there seem to be a
few ball bearings in a slot on the one side, while the slot on the other side
appears well-devoid of ball bearings.
Manipulating these things seem to allow you to move the balls from one side to the other, and sometimes that almost appears to be helpful in your quest… but somehow it’s never quite enough… some Think (c) required.
…OK some more Think (c) – and indeed some more discoveries necessary and then you’re able to neatly remove the coin from its hiding place.Another great addition to the canon – perfectly safe to carry in your pocket – you’re never going to unintentionally lose anything.
Thanks Ali!

