Card counting, which involves recording which cards have been used and discarded during the game, is one such tactic. By doing this, players are able to determine which cards are probably held by opponemoney rummy all appnts and which are still in play. This information can help you decide whether to play defensively by discarding cards that your opponents might need or to pursue specific melds. Another sophisticated strategy is to design plays that give opponents false information about one's intentions. For example, a player may pretend to be weak by holding onto high-value cards while discarding lower-value ones.