A card that you need being discarded by an opponent could mean that they are also trying to finish their own melds. To keep an advantage over opponents, it is essential to uace23 loginnderstand the consequences of both discarding & picking up cards. The two main rummy strategies of melting and laying off can greatly increase a player's chances of winning. Melding is the act of placing sets or runs on the table during a player's turn, whereas laying off is the addition of cards to melds that other players have already made.