The players, usually groups of 6 to 10 people, take turns throwing the discs with the aim of hitting and knocking down the tango. Two trial rolls are usually made and then, as a general rule, twelve rounds of a roll in which the player who knocks down the tango scores.
It was usual to play tango betting small amounts of money, a few years ago the blond pesetas used to be used and now the amounts do not usually exceed the euro. In these cases, all the players agree on an amount per spin. The coins wagered are placed on the tango. When a player knocks down the tango he wins those coins that are closer to his puck than to the tango, he collects those coins and the rest are placed back on the tango to continue the round.

https://es.wikipedia.org/wiki/Chito

The game requires three elements: the players, the yews and the tanguilla itself.
The tanguilla is a cylinder about 18 or 20 centimeters long and 3 or 4 centimeters in diameter, with perfectly smooth bases.
The yews are metal disks between 8 or 10 centimeters in diameter and about 4 or 6 millimeters thick. The dimensions and composition determine its weight, an important factor in the game. In certain localities, yew trees are also called "tangones" or "chocones".

http://museodeljuego.org/wp-content/uploads/contenidos_0000000768_docu1.pdf