[1] The game is so-called because the reserve resembles the weaves of a carpet or an arrangement of a quilt, with cards alternating vertical and horizontal rotations.
Each row should have its card alternately placed vertically and horizontally in this order.
The resulting layout resembles a chessboard with vertical and horizontal cards alternating.
The patience is out when all cards, both from the quilt and the wastepile, end up in the foundations.
A common variant (sometimes called Indian Carpet) is to allow an extra redeal, in order to make the game easier.