When you first start playing Rummy, you may find that putting your cards into combinations is quite challenging. The best strategy is to aim for melds that have the best chance for completion.The cards in your hand and on the table give you information about your chances for completing certain combinations. For example, if you can keep only two cards from the 7 of spades, 8 of spades, and 8 of clubs, and you've already used the 8 of diamonds in another run, you should keep the spades because you have two chances for success this way — the 6 of spades or the 9 of spades.