It is a beautiful white winter and you are going for a ski mountaineering trip with your friends to Krkonoše. It is second risk level of the European avalanche risk table. Snow in the valley is not continuous, but on the ridges is windblown snow layer. The air temperature is -12.9 ° C and wind speed is 5 m/s. Do you take avalanche equipment with you? (Dividing to two branches of algorithm. We recommend to pass both branches.)