Rock, paper and scissors

The game is often used as a selection method (as in choosing teams for sports, for example), as well as throwing coins, playing dice, among others. However, unlike those methods that are based solely on luck, rock-paper-scissors can be played with a little skill. Especially if the game spans several turns with the same player, he can recognize and explore the logic of the opponent's behavior (perceiving and preceding the opponent's moves).

• Stone wins from scissors (by crushing or breaking it).
• Scissors beat the paper (cutting it).
• Paper beats the stone (wrapping it).

The stone is symbolized by a closed fist; the scissors, by two fingers extended; and paper, by the open hand. If two players make the same gesture, there is a tie, and it is usually played again until the tie is broken.

Source: Wikipedia