A 24 challenge packing puzzle by Jean-Claude Constantin.  Pick one of the 24 numbers from the bottom of the tray and pack the pieces to leave that number showing.  A great puzzle that will challenge your spatial reasoning. 

Made in laser-cut wood and by Jean-Claude Constantin. Jean-Claude Constantin lives in Germany, where he designs and manufactures many different laser-cut wood puzzles, as well as metal puzzles and magic tricks.