It's your turn. You can look under your cup at your own dice, but you can't see any of the dice under your opponents' cups. The opponent to your right has made a daring bid. Do you challenge his bid or raise it? If you challenge and are right, he loses some dice. If you challenge and lose, you lose some dice. If you raise, the player to your left gets to decide whether he will challenge you or not. Tough decision. Lose all of your dice and you are out of the game. Be the last player with dice left, and you win! Roll them bones!