A player's chances of winning at rummy can be greatly increased by forming alliances. People can make better decisions by working with another player to exchange information about the cards they are holding and discarding. By workinslots of fung together, players can plan strategies that could result in faster melds and a more effective game plan. Advantages in psychology and upsetting opponents. A psychological edge can also be produced by alliances; when two players cooperate, they can impede their opponents' ability to anticipate moves and respond appropriately. The players in the alliance may benefit from this disruption by being able to make more calculated choices and outmaneuver their rivals.