Chess is a very intense yet very still game in between moves, but with this cool new Umbra Wobble Chess Set, a new level of concentration will be needed to strategize ahead since the pieces all wobble around. This surreal chess board features concave squares of solid walnut and maple wood that help to stabilize the rounded and weighted chrome bases of the freely wobbling chess pieces. Perfect for playing on a boat since the pieces will just wobble back and forth yet stay safely upright in the rolling waves. Check out this VIDEO to see it in action.