Mixed curling the house. In the 2015-16 season, a new rule called "power play" was added, which each team can exercise in one end per game, only when they have the hammer. Instead of positioning the rock in the house on the center line, it is placed to a position straddling the edge of the eight-foot circle, with the back edge of the stone touching the tee line. The opponent's guard stone is placed in line with the stone in the house and the hack. The power play cannot be used in an extra end. Mixed curling Mixed curling, also known as
Wheelchair curling at the 2006 Winter Paralympics Britain in the final. Sweden won the bronze medal. Wheelchair curling is played according to the rules of the World Curling Federation, the only modification is that there is no sweeping and stones may be played by hand while leaning over the side of the wheelchair, or pushed by a delivery stick. To be allowed to compete athletes must have a physical disability in the lower part of the body that required the everyday use of a wheelchair .Teams are mixed but must contain at least one member of each sex. Wheelchair curling was first introduced in Switzerland in 2000