Where must the stone and chair be when a wheelchair delivery starts?

Under rule R14(a) and (b), stones are delivered from a stationary wheelchair.

• Hack to the top of the house: when the stone is delivered between the hack and the outermost edge of the top of the house at the delivery end, the stone is positioned on the centre line at the start of the delivery.
• Top of the house to the hog line: when the stone is delivered between the outermost edge of the top of the house and the hog line at the delivery end, the entire width of the stone must be within the wheelchair lines at the start of the delivery.
• Wheelchair lines (R1(c)): two thin (wool) lines placed parallel to and on opposite sides of the centre line, running from the hog line to the outermost edge of the nearest circle, with the outside edge of each line 457 mm (18 in.) from the centre line.
• During delivery: no part of the delivering player's body can touch the ice surface, and the wheels of the chair must be in direct contact with the ice.

If the delivery rules are broken, the delivered stone is removed from play and displaced stones are replaced by the non-offending team (R14(e)).

Source: World Curling Rules of Curling, 1 September 2026, rules R1(c), R14(a), R14(b) and R14(e).