"The Rodeo Murder" is a Nero Wolfe mystery novella by Rex Stout, first published in April 1960 in the short-story collection Three at Wolfe's Door (Viking Press).
A party at Lily Rowan's Park Avenue penthouse includes a roping contest between some cowboy friends, with a silver-trimmed saddle as the prize.
One of the contestants is at a disadvantage when his rope is missing.
When it is found wound more than a dozen times around the neck of the chief backer of the World Series Rodeo, Lily asks Nero Wolfe to sort out the murder.