The goal is to make one long row of cards in sequence from 10,9,8,..,2 - you can only move the most right-hand card from any (horizontal) row - you can only add a card to the right-hand side of another row - you can only place a card if the card next to it is of higher value - if a row is empty Click on a card to pick it up (no need to drag it) and click again to put it down.
Try to solve this in the least number of moves! You can see the Leaderboard at any time by hitting the space-bar.