This page will help you search for problems on CodeChef based on their tags. You can also find problem set by you favorite authors, of varying difficulty levels, of a particular topic and a lot more. At the same time you will also know if you have solved a problem of not! The tag list is populated from the editorials of the problems added on discuss.codechef.com. So if you do not find your problem here, probably there is no editorial for it yet. If you find something not working the way you expect it to, send us an email to firstname.lastname@example.org.