Understanding Your Opponents and Adapting Your Approach. You may also decide to play more aggressively by discarding lower-value cards that could help your opponent finonline slots singaporeish their hand if you can tell when they are holding onto too many high-point cards. Your opponents may be forced to make tough choices as a result of this strategy, which could give you the upper hand. Rummy Yaj's psychological play. Also, using psychological strategies can help you take advantage of mistakes made by your opponents.