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MagicCube4D -- a four-dimensional Rubik's cube
MagicCube4D is a four-dimensional Rubik's cube. It is an exact analogy in
four dimensions to the original plastic three dimensional puzzle, but
with some useful features - such as a "reset" button - which the original
puzzle lacked.
Canteen contains sand, not water, not even poisoned water.
Everybody in the French Foreign Legion outpost hates Fred and wants him dead. During the night before Fred's trek across the desert, Tom poisons the water in his canteen. Then, Dick, not knowing of Tom's intervention, pours out the (poisoned) water and replaces it with sand. Finally, Harry comes along and pokes holes in the canteen, so that the "water" will slowly run out. Later, Fred awakens and sets out on his trek, provisioned with his canteen. Too late he finds his canteen is nearly empty, but besides, what remains is sand, not water, not even poisoned water. Fred dies of thirst. Who caused his death?
