Gaps Solitaire is a card game.
You can move your mouse on the card which you want to select, and click your left button to exchange it to the other one.
You can arrange the cards so that the cards in each row can go from 2 to K and have the same suit.
When there is a gap to the right of a card, you can move the card that is of the same suit and is one point higher. When the gap is at the left most position, you can move 2 to it.
When you can no longer move, press the shuffle button to shuffle the cards that are not in order.