13

13 is a difficult dexterity puzzle which has two objectives:

1.  Place all thirteen metal balls in the domino holes at the bottom of the puzzle.  The dark domino pieces slide around and become obstacles to successfully placing the balls in all the holes.
2.  Use the ramps at the opposite corners of the frame to get the thirteen metal balls into the holes on TOP of the dark domino pieces inside the frame.

Made in laser-cut wood, acrylic, and stainless steel. Jean-Claude Constantin lives in Germany, where he designs and manufactures many different wood and metal puzzles, as well as magic tricks and other intellectual toys and games.