All numbers are in a slide. Slides from left to right. Under number 4 is the free hole. A difficult puzzle, but it can be solved. Assignments on the back of the puzzle. Material acrylic.
This puzzle is a copy produced by puzzle design Ton Delsing.Slide the numbers into order. Start: remove orange center piece .Green pieces are immovable. Material MDF.The letters are covered with transparent foil. You can slide without damage.
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