The best way for players to form sets and runs required them to carefully consider which cards to discard & which to keep. Observing other players' card picks and discards ismason slots an important Rummy tactic because it can reveal important information about the cards they may be holding and their intended outcome. Knowing when to declare "Rummy" and end the round is a crucial component of rummy strategy. Players have to consider the possibility of winning the round quickly versus the risk of holding onto high-value cards.