The minimum number of points required to open your hand is 101. In order to open the player needs to create sets of either 3 or 4 identical numbered tiles of different colors (e.g. black 5, red 5 & blue 5) or running numbers of the same color (e.g. red 7, red 8 & red 9). A set must have a minimum of three tiles. Players are only allowed to add to existing sets on the table after they have opened with a minimum of 101 points already. Players are of course allowed to open and then add to other sets within the same turn.