This is the "Numbers Puzzle" self explanatory. The black acrylic numbers 0-9 all have to fit into the square tray. NO solution is provided but if your head hurts and you need the answer or just a clue please message me and I would be glad to help you. Size; 215 mm x 183 mm x 6 mm thick Colour is Yellow tray with Black numbers or Black tray with Yellow numbers depending on what is in stock. If you prefer a particular colour please email me. The 3rd photo gives you a clue as to what it should look like.