Try this challenging new puzzle made by Tomas Lindén that was his exchange puzzle for the IPP (International Puzzle Party), London 2014.
The goal is to create a shape of mirrored symmetry. The solution will have two mirrored identical halves, one dark and one light. The solved state will include space in between the pieces. Use your imagination to draw a line down the centre of your solved shape to create the symmetrical dark and light halves. All pieces lay flat and not on top of eachother.