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
Curling the game. The 1990 Brier was considered by many curling fans as boring to watch because of the amount of peeling and the quick adoption of the Free Guard Zone the following year reflected how disliked this aspect of the game had become. The free guard zone was originally called the Modified Moncton Rule and was developed from a suggestion made by Russ Howard for the Moncton 100 cashspiel (with the richest prize ever awarded at the time in a tournament) in Moncton, New Brunswick, in January 1990. "Howard's Rule" (later known as the Moncton Rule), used for the tournament