hlavolam znamená v angličtina

conundrum [conundrums]▼(difficult question or riddle)
noun
[UK: kə.ˈnʌn.drəm] [US: kə.ˈnən.drəm]

puzzle [puzzles]▼(game for one person)
noun
[UK: ˈpʌz.l̩] [US: ˈpʌz.l̩]