Wheelchair curling the rock handle, allowing the rock to be pushed while applying correct rotation. Stones delivered between the house and the near hogline must be placed within 18 inches either side of the centre line and must be released prior to reaching the near hogline. National and international competitions are played under rules devised by the World Curling Federation. These rules mandate that teams be of mixed gender, and that games be eight ends in duration. Time limits of 68 minutes for each team with one 60 second time out will be enforced by time clocks. Eligibility is limited to people
Curling Colzium, in the form of a low dam creating a shallow pool some in size. The International Olympic Committee recognises the Royal Caledonian Curling Club (founded as the Grand Caledonian Curling Club in 1838) as developing the first official rules for the sport. In the early history of curling, the playing stones were simply flat-bottomed stones from rivers or fields, which lacked a handle and were of inconsistent size, shape and smoothness. Some early stones had holes for a finger and the thumb, akin to ten-pin bowling balls. Unlike today, the thrower had little control over the 'curl' or velocity