Beautifully machined and anodised as always, the egg is a multistage puzzle that requires lot of thinking. It was already invented back in 1986 but at that time was too hard and expensive to make. Wil's Egg is a sequential movement puzzle, where you have to "crack" open the egg in half. At first there is minimal movements you can make between the two halves, but as you progress, you will find clues on how the internal mechanisms work and the next steps that need to be taken. A beautifully designed puzzle and a must-have for everyone who likes Strijbos's puzzles.