The Big Bang Theory: Sheldon's Three Person Chess

Sheldon explains to Leonard how he made three person chess work

A simple chess game for N players – Zero

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The Big Bang Theory: Sheldon's Three Person Chess

Sheldon Invents Three-Person Chess - The Big Bang Theory, Sheldon Invents Three-Person Chess - The Big Bang Theory, By The Big Bang Theory Funny Moments

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Three Player Chess : r/bigbangtheory

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When is the funniest time the game of chess appears in 'The Big Bang Theory' (TV show)? - Quora