The Constrictor Hitch Knot / Slipped Constrictor Hitch Knot

The Constrictor Hitch Knot, commonly called the Constrictor Hitch or Constrictor Knot, is one of the best binding hitch knots you can tie. However, like it's name implies, it can become so tight that it can be impossible to untie. This can be overcome by tying the slipped version of this knot.
Ashley Book of Knots - amzn.to/2WSV9FR