Currently blocking chesspiece, showing cunning (7)
I believe the answer is:
knowing
'cunning' is the definition.
(I've seen this before)
'currently blocking chesspiece' is the wordplay.
'currently' becomes 'now' (right now).
'blocking' is an insertion indicator (to block can mean to plug a gap in something).
'chesspiece' becomes 'king' (I am not sure about this - if you are sure you should believe this answer much more).
'now' going into 'king' is 'KNOWING'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for knowing that I've seen before include "Meaningful" , "State of awareness" , "Cunning" , "Understanding" , "Wise" .)