Solver perhaps in a comfortable chair (6)

I believe the answer is:

settee

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

I don't understand the rest of the clue.

(Other definitions for settee that I've seen before include "somewhere to sit" , "Chesterfield" , "Comfy sofa" , "Comfortable seat for two or more" , "Intended recipient of my work, so to speak" .)

I've seen this clue in The Independent.

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