Points are usually given according to the number of unmelded cards in opponents' hands; the player who successfully melds all of their cards first wins the roundrummy sir. Players must strike a balance between improving their own hands & monitoring their opponents' possible melds, which adds another level of strategy to this scoring system. Know the Fundamentals of 123 Rummy. It is crucial to comprehend the rules and gameplay mechanics of 123 Rummy in order to fully understand the game.