Try to open the puzzle by removing the 4 cylinders with the numbers. (2014 is year of design). Inlaid numbers. Materal acrylic.If you have problems to open it, use the green tool.But try to find out why this tool is in the BOX!!!GOOD LUCK!
During an International Puzzle Party (IPP) I received a drawing with 2 puzzlesfrom Serhiy Grabarchuk. I made it. Assignment on the back of the box see photo 3.Material 9 cardboard pieces.