Bura (Russian: Бура, "cutter") is a Russian, Ace-Ten, card game that is "particularly characteristic of Russian prisoners and ex-prisoners. Its alternative name of Thirty-One refers to the combination of three trump cards that wins the game. One of the main variants of this game is known as Kozel ("goat") or Bura Kozel. It is a point-trick game with the unusual feature that players may lead several cards of the same suit at once.