Participants in chess game in central London area (13)
I believe the answer is:
knightsbridge
'central london area' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'participants in chess game' is the wordplay.
'participants in chess' becomes 'knights' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'game' becomes 'bridge' (card game).
'knights'+'bridge'='KNIGHTSBRIDGE'
'in' is the link.
Can you help me to learn more?
(Other definitions for knightsbridge that I've seen before include "Fashionable London area, "south of the Park"" , "road in London" , "somewhere in London" , "Stop near Hyde Park" .)