Brunnian links are a type of nontrivial link – or knot – where multiple linked loops become unlinked if a single loop is cut or removed. Beyond ‘fun’ disentanglement toys and a tantalizing subject of ...

Locked safes in Dead Island 2 hold some rare treasures like weapon or mods. Some of the boxes can be unlocked instantly by finding the right key. However, for some need you to come back later after ...