Bohemian soundly screwed and defeated (10)

I believe the answer is:

checkmated

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'defeated' is the definition.
(checkmating is a kind of defeating)

'bohemian soundly screwed' is the wordplay.
'bohemian' becomes 'czech' (I've seen this before).
'soundly' shows a homophone (sound like).
'screwed' becomes 'mated' (I can't explain this - if you can you should believe this answer much more).
'czech' sounds like 'check'.
'check'+'mated'='CHECKMATED'

'and' acts as a link.

Can you help me to learn more?

(Another definition for checkmated that I've seen is " Moved to victory".)

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