Sophocles dismissed pool with the mating game? (5)

I believe the answer is:

chess

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'game?' is the definition.
(chess is a kind of game)

I don't understand the rest of the clue.

(Other definitions for chess that I've seen before include "This is played on board" , "that has over thirty men on board" , "activity aimed at downfall of a king" , "Pieces moved in this" , "Musical - board game" .)

I've seen this clue in the Irish Times.

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