We now insist on resumes being accompanied by the answers to set "homework." No answers, no interview.

We get about half our interviewees unable to solve problems that are similar or easier during interview. Whether that's nerves/stress or simply an indication that they got someone else to do the homework for them we don't know.

One candidate even phoned a friend during the coding part of the interview to get some answers. For some jobs he'd be hired, but not for most.