SimilarityRank
solvable 0.898 79398
intractable 0.839 38382
vexing 0.814 57669
solved 0.772 7831
paradoxes 0.750 49211
unanswerable 0.747 81176
solve 0.741 3373
insurmountable 0.732 30300
unsolved 0.721 37619
conundrum 0.718 31088
paradox 0.717 18277
perplexing 0.713 31002
riddle 0.703 34611
irreducible 0.702 72751
baffling 0.701 34300
unknowable 0.700 53536
conundrums 0.700 81680
problem 0.697 378
fraught 0.693 25023
inescapable 0.686 29961
exasperating 0.686 65409
puzzling 0.685 24981
enigma 0.681 37232
quandary 0.678 42760
existential 0.675 24908