You can learn a lot about the cards that are still in play and the ones that have already been used by keeping an eye on which cards they are discarding. To finish your melds and sets as soon as possible, you can use this informomni slotsation to help you decide which cards to discard and which ones to pick up. Make Thoughtful Choices. You can decide which cards to pick up and which to discard by concentrating on one meld at a time and keeping an eye on your opponents' discards. By using this tactical approach, you can finish your melds and sets more quickly, improving your chances of winning the game. Effective rummy play requires knowing when to give up and when to press for the win.