unresolvable

adjectives

not easily solved
"an apparantly insolvable problem"; "public finance...had long presented problems unsolvable or at least unsolved"- C.L.Jones
insolvable, unresolvable, unsoluble, unsolvable
not capable of being resolved
"unresolvable confusion"
unresolvable
is similar to
not permitting extrication; incapable of being disentangled or untied
"an inextricable knot"; "inextricable unity"
inextricable