Can you solve it? Two dead at the drink-off – a brilliant new lateral thinking puzzle

[Booed Off Stage]

Can you solve it? Two dead at the drink-off – a brilliant new lateral thinking puzzle

Who poisoned whom?

UPDATE: Read the solution here

Today's puzzle is credited to Michael Rabin, the legendary computer scientist, who in the late 1980s posted it to an electronic bulletin board at Carnegie Mellon University.

It has recently been brought to light by a puzzle enthusiast who thinks it deserves to be better known. I agree – it's an all time classic.

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