Players ought to keep a careful eye on the cards that their rivals are selecting from the discard pile. A consistent pick-up of a particular card by an oppormmynent could mean that they are almost ready to form a run or set. In such situations, it might be prudent to keep cards that are less likely to help your opponents and discard cards that might be advantageous to them. Every round is made more complex by the strategic interaction between the offense and defense.