The player turns over two cards, one at a time. The cards are kept in
position. If the cards match, the cards stay open and the player turns
over two more cards. If the cards do not match, the cards turn
face-down. Play continues until all the cards have been matched. You
should watch carefully and remember where cards are located. Then, when
you turn over your first card, you may remember where to find a matching
card.
Let's see who can win the game with the least turns!