Each player has the right to turn over any two cards in one turn. Depending on what is shown on these two cards - the player acts as follows:
If the images on both open cards match - the player takes these two cards and has the right to turn over any two cards on the table again.
But as soon as the images on the two open cards do NOT match - the player acts as follows:
if a card has a number image - a player turns it back over with "Klepka" written on it upwards and puts it on the table exactly where it was. The other players try to memorize its location.
If the card is a mathematical sign, or a variable, or chaos - the player takes such a card as a prize and immediately takes it for himself.
The turn passes to the next player.
Once there are no face-down cards left on the salt, each player must make an arithmetic expression using only their cards obtained during the game to get as large a number as possible.
The winner is the one who has the largest number of complex arithmetic expression from all his cards.
-description from publisher