WHEELCHAIR CURLING RULES (a) Stones are delivered from a stationary wheelchair, which is positioned so that the stone is delivered from the centre line. During delivery, the wheels of the chair must be in direct contact with the ice. (b) The delivery of the stone is undertaken by the conventional arm/hand release, or by the use of an approved delivery stick. Stones must be clearly released from the hand or stick before the stone reaches the hog line at the delivering end. The feet of the player delivering the stone must not touch the ice surface during delivery. (c) A stone is in play when it reaches the hog line at the delivering end. A stone that has not reached the hog line at the delivering end may be returned to the player and redelivered. (d) Sweeping is not permitted. (e) For WCF wheelchair competitions, each on-ice team must be comprised of both genders for all games. (f) In competitions in which 6 ends are scheduled, a minimum of 4 ends must be completed in round robin and tie-breaker games, and 6 ends must be played in play-off games. (g) The players participating in the Draw Shot Challenge are of mixed gender.