这个数学谜题真是个烧脑的难题，我花了整整一小时才解开。

This math puzzle is a real ___mindbender — it took me a full hour to solve it.

那位魔术师是个厉害的读心术师，能准确说出观众心里想的数字。

The magician was an amazing ___mindbender who could precisely tell the number the audience was thinking of.

解决这个复杂的数学难题对我来说真是个令人头脑发昏的挑战。

Solving this complex math puzzle was a real ___mindbender for me.