Poor player taking rook and a bishop with piece (6)
I believe the answer is:
rabbit
'poor player' is the definition.
(I've seen this before)
'rook and a bishop with piece' is the wordplay.
'rook' becomes 'r' (abbreviation in chess).
'and' is a charade indicator (letters next to each other).
'bishop' becomes 'b' (abbreviation used in chess).
'with' means one lot of letters go next to another.
'piece' becomes 'bit' (bit is a kind of piece**).
'r'+'a'+'b'+'bit'='RABBIT'
'taking' acts as a link.
(Other definitions for rabbit that I've seen before include "Burrowing animal, lives in warren" , "Person poor at games" , "bun?" , "Roger, Peter or Brer" , "See 17" .)