Another ancient Iranian board game, known as Nerdeh or Nerdshir in ancient Iran, laid the foundation for the internationally recognized game of backgammon. While many worldwide credit Iranians with its invention, the backgammon rules and number of pieces differ from the contemporary version. In backgammon, two opponents compete to move their pieces into various houses by rolling dice, striving to cover all houses and eliminate their pieces from the game. Success in this game requires a blend of luck and strategy.