This is the 13665th most frequent Russian word.
нелогичной
Illogical.
The word 'нелогичной' here describes an explanation attempt as lacking logical sense.
Её попытка объяснить ситуацию оказалась совершенно нелогичной.
Her attempt to explain the situation turned out to be completely illogical.
In this sentence, 'нелогичной' is used to describe someone's reaction as not aligning with reasoning or expectations.
Он считал, что её реакция на событие была нелогичной.
He thought that her reaction to the event was illogical.
Here, 'нелогичной' is used to characterize the riddle's nature as being contradictory or confusing.