I'm of the opinion that the only valid type of coding question in an interview is one that tests the candidate's ability to perform the actual type of work they

I'm of the opinion that the only valid type of coding question in an interview is one that tests the candidate's ability to perform the actual type of work they are being hired to do. If you were trying to hire a mechanic, would you first give them a sudoku puzzle to measure his "cleverness" (and then use that as a predictor of their car repair abilities)?