Players can learn about their opponents' possible melds and modify their own play by watching which cards are picked up or discarded. You should keep any heart crummy all games 51 bonusards you have on hand if your opponent frequently discards hearts, for example, as this could mean they are attempting to make a run in that suit. Effective hand management is another successful tactic. By keeping versatile cards that can contribute to several possible melds, players can try to keep their options open.