Crossword Genius

Therefore in error if pawn moved and captured man? (8,2,3)

Ross

I believe the answer is:

prisoner of war

I'm a little stuck... Click here to teach me more about this clue!

'and captured man?' is the definition.
I can't judge whether this defines the answer.

'therefore in error if pawn moved' is the wordplay.
'therefore' becomes 'so' ('so' can mean 'consequently' or 'therefore').
'in' means one lot of letters goes inside another.
'moved' indicates anagramming the letters.
'error'+'if'+'pawn'='errorifpawn'
'errorifpawn' is an anagram of 'prinerofwar'.
'so' put within 'prinerofwar' is 'PRISONER OF WAR'.

Can you help me to learn more?

(Other definitions for prisoner of war that I've seen before include "POW in full" , "Enemy captive" , "Captured member of enemy forces" , "Captured soldier" , "E.g. Stalag inmate" .)

I've seen this clue in The Telegraph.
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