Maybe today when every company would love you to do a series of coding exams to vet you for their thousands of competing positions, but in 2007/2008 a fun brain

Maybe today when every company would love you to do a series of coding exams to vet you for their thousands of competing positions, but in 2007/2008 a fun brain teaser to chew on and solve in your spare time was novel, fun, and a good way to attract people who liked solving tough problems without just filtering through resumes.