Editing Constrictor knot (section)

===Slipped constrictor knot===
This variation is useful if it is known beforehand that the constrictor will need to be released. Depending on the knotting material and how tightly it is cinched, the slipped form can still be very difficult to release.
[[File:Slipped-Constrictor-ABOK-1250.jpg|left|550px]]
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#Make a turn around the object and bring the working end back over the standing part.
#Continue around behind the object, and then again over the standing part back to the side of the first turn.
#Pass a [[Bight (knot)|bight]] of the working end under the point where the first riding pass and the standing part cross to form a slip loop.
#Be sure the slip loop bight and both ends emerge from in between the two turns as shown.
#To release, tug on the working end so that the bight passes back through the knot.

The slipped constrictor can also be tied in the bight and slipped over the object to constrict. Despite its advertised advantage (quick release), the slipped constrictor knot can also be hard to release when worked extremely tight in certain rope materials.