Chinese morra game with an urban art touch.
Rules: each symbol beats another according to this schema
ick, the stone breaks ack the scissors
ack the scissors cut ock the paper
ock the paper catch ick the stone

Points: you earn a point each time you win a single match
Scope: to win the number of matches decided at the beginning, 1 on 1, 2 out of 3, 3 out of 5

The best guesser wins.

Try to guess whether the sum of all fingers will be either an even or an odd number.