Curated problems and full solutions — from elegant puzzles to competition-grade challenges. Every problem here is free to read and free to use — print them, put them on a board, run them at a club meeting. No account, no paywall, no attribution required beyond a link back.
Five problems with complete solutions, pitched around the AMC 10/12 range, released as a set you can hand straight to a club. Leave an email and we'll send it the day it goes up — that is the whole notification, and there is nothing else attached to it.
Running a math club and want a set built around something specific — a technique, a contest, a topic your students keep getting stuck on? Write to hello@konstellatemagazine.org and tell us what would actually be useful. We would rather build the set you need than guess. We also publish student solutions, with a byline.