stumper

Sometimes crime investigation is so difficult, like the real 'stumper' for Fort Worth, Texas, detectives.

Giles was the more effective spinner but he wasn't exactly aided by his 'stumper' .

Here's a 'stumper' - if a graffiti artist takes can to canvas, not train car, and hangs it in a gallery, is it still graffiti?

Although the idea for the Lachine Canal dates back to the earliest days of the ancien régime in New France, getting the project going was a real 'stumper' .

The only 'stumper' : Would you rather be rich and ugly or good-looking and poor?

After last week's 'stumper' , we'll end the round on an easy one.

To this question, I quickly replied the first thing that came to my head - the age-old 'stumper' , ‘Can God create a rock he cannot lift?’

this one's a 'stumper'