Bowline draws tighter as tension is placed on the standing part of the rope. The "Birmingham bowline" has two loops; the working part is passed twice around the standing part (the "rabbit" makes two trips out of the hole and around the tree). Other two-loop bowline knots include the Spanish bowline and the bowline on the bight; these can be tied in the middle of a rope without access to the ends. A triple bowline is used to make three loops. A Cossack knot is a bowline where the running end goes around the loop-start rather than the main part and
Human knot arms. The challenge is to solve the game several times starting each time with an increasing number of crossed people. The game is recommended for children from 12 years and up, and is best suited to a group of ten or so players. No materials are required. The purpose of the human knot puzzle is to gain team building skills, problem solving skills, and communication skills among a group of people and onto the individuals participating. The options that can be included to make the activity more difficult are the following: Human knot A human knot is a common icebreaker