Upcoming Sunday, 28 April, the DOMjudge team is running an open online
contest, based on the very latest and greatest version of DOMjudge.
Anyone can participate. It is a great chance to try out and see the latest
code of DOMjudge in action. You can join to help test the next version of
DOMjudge, but equally just to have a good round of practice or just plain
problem solving fun!
Details and registration at: https://contest.domjudge.org/register