Guanaco Chess features the Guanaco, belonging to the Lama family of pieces. They jump orthogonally on every second square, but have only four capture squares.

Extended castling: besides normal castling one can choose to move the king three squares instead of two. The rook ends up on its usual square. The corner square provides a hiding nest for the king should the player want to invoke play on the same wing and advance with the pawns. The extended castle rule also makes play on the wings easier to achieve. Queenside castle becomes more attractive. The extra corner squares will enhance the strategical possibilities. Try placing the king on the extra corner square, advance the g-pawn (or b-pawn), and follow up with rooks from behind. The king will be safe and will not stand in the way of the rooks.

The Lama pieces (Llama, Alpaca, Guanaco, and Vicuña) also appear in Alternative Chess, Accessory Chess, Pilgrim Chess and Pioneer Chess.