Crossword Genius

Game in which loser first to take lead? (7,8)

Ross

I believe the answer is:

russian roulette

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'game' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for russian roulette that I've seen before include "Deadly gamble" , "deadly stunt" , "chancy business" , "Dangerous game of chance" , "suicidal undertaking" .)

I've seen this clue in The Independent.
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