Eddie the Eskimo is hungry and so are his friends. It's time to go fishing for your supper, but all the ponds are frozen over.

You must draw a line with your fishing rod on the ice and every ice kube you touch will then be flipped over, hopefully creating whole horizontal lines of the same colour ice. It is not as easy as it sounds, as you can only flip the ice once before supper time, and your line cannot cross over itself. Can you unfreeze the seventy ice pools and feed everyone, or are you all going to bed without your supper?