This is the 204th most frequent Hungarian word.
tudta
"Knew" (past tense of "know").
Here, 'tudta' denotes the past tense third-person singular form of 'tudni,' meaning 'to know,' indicating past knowledge of the difficulty.
A diák tudta, hogy a vizsga nehéz lesz.
The student knew that the exam would be difficult.
In this sentence, 'tudta' is used in the negative form, expressing a lack of awareness or understanding of the method to solve the problem.
Nem tudta, hogyan kell megoldani a problémát.
He/she did not know how to solve the problem.
Here, 'tudta' represents prior awareness or realization of an action that needed to be taken in the future, expressed in past tense.