The Norse Vikings explored and conquered their world in fierce warships and needed a way to protect their valuable belongings and treasures during the journey. The Mastermyr and Oseberg chests were the most well-known style that they used during these voyages. This unique and beautiful puzzle box has a slot for gift givers to easily hide a modern treasure of cash or a gift card for loved ones and then they can use the box a safe place to store small valuables, too. Only a True Genius is able to unlock this Viking Sea Chest - can you? Difficulty 3 of 5.