Particularly during close games, this tactical blocking can be a game-changer. Effective hand management is another crucial composlots king 777 downloadnent of strategy in 51 Rummy. By keeping versatile cards that can contribute to several possible melds, players can try to keep their options open. You can create a run with a 4 or a set with another 5 if you can hold onto a 5 and 6 of hearts, for instance.