This is and Egyptian Pyramid theme Solitaire game.
Add up two cards to a total value of 13 to remove the cards. A King (K) is 13 points and can be removed as a single card, a Queen (Q) is 12 points, a Jack (J) is 11 points and an Ace (A) is worth 1 point.
Use the free cells to temporally store a card . Every new level is more difficult because it has once free cell less.