Game associable with Napoleon (4)

I believe the answer is:

solo

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'game' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for solo that I've seen before include "Piece for single performer" , "It's performed alone" , "Han - (Star Wars); fly unaccompanied" , "Lone" , "Performed by a single voice or instrument" .)

I've seen this clue in the Evening Standard.

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