The metal puzzle set from Kosmos features six different wire puzzle games. Each puzzle consists of two intertwined metal pieces that must be separated through clever manipulation and rotation. Once successfully solved, the pieces can be returned to their original state, allowing each puzzle to be solved over and over again. An included solution sheet provides practical hints in case a construction proves difficult to untangle. This compact set is designed for a single player and offers brain teasers with an average playtime of about 15 minutes.