Problems are prepared by me and Hasan Jaddouh. Testers are Marek Sokołowski and Praveen Dhinwa (who is also an editorialist).
Translators: Hu Zecong, Team VNOI, Sergey Kulik (Mandarin, Vietnamese and Russian respectively).
There is no registration required, anybody with a CodeChef handle can participate.
We want cook-off contests to attract even the strongest competitors. You will be provided 5 problems, with difficulty div2-A through div1-E. We expect even the best to struggle to solve all the problems.
I wish you great fun and no frustrating bugs. See you on the leaderboard!
Additional announcement: we look for setters, testers and editorialists, especially for a setter for the coming lunchtime contest.
Fill in the form https://www.codechef.com/problemsetting/apply or reach me by PM on Codeforces.