Abstract: The invention relates to a supporting plate incorporating an adjustable asymmetry function enables the carving turns to be performed in such a way, that the skis run along two parallel curves, which in ideal circumstances match closely the arcs of two concentric circles, that no additional energy is needed to maintain the skis in parallel position throughout the turn, and that the turns are executed without unwanted vibrations and with normal, not much increased physical activity. The asymmetry of the skis, that is the assignment of a left and a right ski, is set up in a control assembly, comprising a weighting member, made of two balls, one steel ball and one highly compressible ball made of rubber or similar material, and two mechanical stops, as well as a housing, where an aluminum piston with a magnet acts as a find regulating device. The left and the right ski are set up by the disposition of the balls and the outside ski in a turn, respectively, are distinguished.