THEFIREHOUSECOM - - Only on the DCXVIDEO channel on YouTube is sudoku a spectator sport. Contestants dashed around the 30-foot by 30-foot “Snowdoku™” puzzle made from 35,000 pounds of ice and snow, with the winners getting a free trip to Aspen, Colo. and the use of the Chrysler Aspen SUV.

See it on YouTube by clicking this link – SNOWDOKU™ . And yea, Snowdoku is a registered trademark.