Like champion sacrificing bishop left on table? (7)

I believe the answer is:

uneaten

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'left on table?' is the definition.
'uneaten' can be an answer for 'left' (I've seen this before). I am not certain of the 'on table?' bit.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for uneaten that I've seen before include "Left after dinner" , "Not consumed as food" , "Make an outline of" , "Left on the plate" , "not chewed" .)

I've seen this clue in The Independent.

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