The turn on the forehand is the simplest of the exercises, asking the horse to move his hindquarters around his forehand, so that the hindquarters inscribe an arc. The turn on the haunches asks the horse to move his forehand around the hindquarters, so that the forelegs inscribe an arc, with the horse bent in the direction of the turn. It is therefore more difficult than the turn on the forehand, requiring better balance and engagement. The pirouette is the most difficult and advanced maneuver, asking the horse to bend in the direction of movement and remain engaged, and requiring collection.