Also, using several blocs at once can put opponents under psychological strain. When opponents are uncertain about what a player may be holding, they may reconsider their own tactics and play more cautiously. Shrewd players can facebook mod apktake advantage of this psychological component of rummy, which gives the game an additional level of complexity. Being flexible means being able to modify one's strategy as the game goes on, in addition to being able to create multiple blocs. Players need to stay alert & sensitive to any changes in the game's state, such as adjustments to the discard pile or opponent movements. A strict strategy may result in lost opportunities and, eventually, defeat.