Pyramid Mahjong Solitaire

Combine 2 free tile to a total value of 13. A tile is free if it's not covered and has at least 1 free side (left or right). The King is worth 13 and can be remove on it's own, the Queen is worth 12 points, the Jack 11 points and the Ace is worth 1 point. Remove all tiles to advance to the next level.