“The problem remains a conundrum to me, and I hope others can propose ways of dealing with it.”

“Now there's a conundrum to puzzle a tired head to sleep.”

“Current fast-breaking technological advances may bring them together to definitively solve the conundrum.”

“We present below the major policy paradoxes or conundra indicated by such research and theorizing.”

“Rey is worried about conundra involving epiphenomenalism, zombies and such, and to avoid them he wants to reduce phenomenal consciousness to the computational.”

“As a Capricorn, you probably think you already have all the answers to this week's cosmic conundrums.”

“Many pieces pose questions, state conundrums, then negotiate the minefield therein.”

“One profession deals with the conundrums of the human psyche through talking therapies like psychoanalysis or cognitive behavioural therapy.”