A human knot is a common icebreaker game or team building activity for new people to learn to work together in physical proximity. It is a disentanglement puzzle in which a group of people in a circle hold hands with the person across from them, and the goal is to entangle the limbs to get the group into a circle, without letting go of grasped hands. Instead, group members should step over or under arms to try to untangle the knot. Not all human knots are solvable, and may end up as two circles.
The game is recommended for children from 12 years and up. Optimal number of people is 7 to 200 (group sizes of 10 are ideal). No materials are required. It is designed to build team work and problem solving skills, while serving as a fun icebreaker.