Page 494 - Bob Holtzman "The Field Guide to Knots How to Identify, Tie, and Untie Over 80 Essential Knots for Outdoor Pursuits"
P. 494
4. If the knot is snugged up tight against the ring, it will hold tenaciously and become very difficult to untie.
Untying: It may be necessary to create slack in the standing part first. Then
slide the knot toward the standing part to create slack around the object. At
that point, the working end can be pulled free.
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