Swish - a thinking game

A swish is the sound you hear when the ball goes smoothly into the basket. Your Swish is a match of several cards placed one on top of the other, so that each ball enters a hoop of the same color. The cards are transparent, and you can flip and rotate them in different directions, but no ball should be left without a hoop, and no hoop without a ball. The goal: to collect the most cards. Number of players: 2+