From Red Bull on Youtube:

Red Bull Roll the Dice is a snowboarding contest conducted in a unique manner. Participants had to challenge not only their skills, but also their wiliest opponent – luck. Before each attempt the riders were throwing giant dice down the hill to determine which trick they would have land. One dice showed the type of the grab and the other – angles of rotation. The results could vary anywhere from a 180 tail grab to a 720 nose grab.

This event attracted the best riders from all over Russia. In four elimination rounds the riders dropped out one by one, until the best performers with the most diverse tricks were left standing.