In honour of the fortnightly topic challenge, here are some cryptic clues that refer to chess:
Chewed after leg. It's risky (6)
Ace a piece (6)
Show where Arthur lived (6)
The second clue is about a particular Ace
gambit. gam, a leg and bit for chewed.
Not sure on the 2nd. (Got it, thanks to Solucutor)
Promote is a possibility that fits the clue, but not the number of letters. Pro, an ace, and mote, a piece of dust.Bishop, Billy Bishop was a Canadian Ace.
Castle, where King Arthur lived, and a popular tv show.