Maxi Yahtzee is a turn-based dice game. The aims is to get the highest
total points by scoring different categories. First, you roll all 6 dice and
decide to score a category or lock some of the dice and roll again.
You get total 3 rolls for each turn. If you have not used all the rolls,
the remaining rolls will be saved for the later turns. If you used all rolls,
you must score one of the categories (even it is no point) The game
ended when all the categories are scored.