Describes two parties who are inextricably locked together in a fight, struggle, or argument where neither side can gain the upper hand.

for threads or vine-like objects to be inextricably intertwined or knotted together

To remove perils and settle disputes for others; to reconcile differences. (idiom)

troubleshooting; solution to difficult problems

an enigmatic knot hard to untie; an intractable difficulty or a deadlock that is hard to resolve

to overcome difficulties and alleviate suffering or worries