Yatzy: Dice Game

Yatzy is a public domain dice game similar to Yacht and Yahtzee. Players take turns rolling five dice. After each roll, the player chooses which dice to keep, and which to reroll. A player may reroll some or all of the dice up to two times on a turn. The player must put a score or zero into a score box in each turn. The game ends when all score boxes are used. The player with the highest total score wins the game.