What does a Yahtzee mean?
A Yahtzee occurs when all five dice are the same. If the player throws a Yahtzee and has already filled the Yahtzee box with a score of 50, they score a Yahtzee bonus and get an extra 100 points. However, if they throw a Yahtzee and have filled the Yahtzee category with a score of 0, they do not get a Yahtzee bonus.
Where did the phrase Yahtzee come from?
Etymology. Trademarked by the Milton Bradley Company in 1956, as an alteration of “Yatzie”, derived from yacht (see Yacht (dice game)).