is no functional difference between using only 2 or 4 fingers, etc. However, if the numbers of fingers which each player may use is an odd number, and if the players pick their numbers uniformly at random from all possibilities, then the probabilities of the pairings being odd or even are not equal and the "evens" player will have a slight advantage. As an example, if players may use up to three fingers (and must choose 1, 2, or 3 with equal probability), then there are 5 ways to make an even pairing (1–1, 1–3, 3–1, 2–2, 3–3) but only 4 ways for an odd pairing (1–2, 2–1, 2–3, 3–2). With an odd number of permitted fingers, the "evens" player will have a slight advantage as there will always be one more way to make an even number, except in the extreme case of one finger each where the "evens" player cannot lose. Micatio Micatio is a variation of morra that attempts to lessen the element of chance by including the sight and speed of the player, a calculation of probabilities, and a certain psychological flair. In micatio the two players "each raise the fingers of the right hand, varying each time the number raised and the number kept down, and call aloud the total of the fingers raised by both", until one player wins the round by guessing correctly. Winning the round earns the player one point. If the numbers thrown do not match the numbers shouted, no point is scored. Additionally: Hands must be in clear view to players and referees One challenger cannot play after they see what the other has shown The point is won by the player who guesses correctly the sum of all fingers displayed If both players guess correctly, the point is unassigned and the game continues The set is won by the player who is first to score 16 points in the first and the return game, and 21 in the deciding one If both players tie the score when they miss a point to win, they play a 5-point tie-break The match is awarded to the winner of two out of three sets Players cannot challenge referees' decisions It is an individual game, but you can also play with a mate against two others, as they do in the Championships In such a case, two challengers start the game and the