Crossword Genius

Inspection by an officer finishes the game on board (9)

Ross

I believe the answer is:

checkmate

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'inspection by an officer finishes the game on board' is the definition.
I can't judge whether this definition defines the answer.

'inspection by an officer' is the wordplay.
'inspection' becomes 'check' (check is a kind of inspection).
'by' is a charade indicator (letters next to each other).
'an officer' becomes 'mate' (mate is a kind of officer).
'check'+'mate'='CHECKMATE'

Can you help me to learn more?

(Other definitions for checkmate that I've seen before include "Winning call on board" , "defeat on board" , "Chess game ending" , "final defeat" , "Complete victory" .)

I've seen this clue in The Globe and Mail.
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