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...and I'll Google so you don't have to. I'll assume you know what "trumps" are, generally, but if you don't, go read Wikipedia about bridge or whist or any trick-taking game. [4/N]
Re: "knew what king to call," this and the "vole" thing suggest that the game at hand is Ecarte,* where "before playing the first card, if either player holds the king of trumps, they can mark an extra point for themselves by announcing it." [6/N] *https://en.wikipedia.org/wiki/%C3%89cart%C3%A9 …
