The Purple Comet! Math Meet is a free, annual, international, online, team, mathematics competition designed for middle and high school students that has been held every year since 2003. Teams of from one to six students compete by submitting solutions to a list of mathematics problems. There is a ten-day window (April 1 through April 10) during which teams may compete choosing a start time most convenient for them. The problems range in difficulty from fairly easy to extremely challenging. In 2012 over 10,000 students competed on over 2700 teams from 43 countries.
