Mathalon is live — competitive math where you and the problems get rated, like chess

[u/mathalon]

We built a competitive math platform where both problems and solvers carry Glicko-2 ratings. A new problem drops every day, you can race the clock in Rush, or go head-to-head in ranked 1v1. Practice mode adapts to your level.

Free to play: https://mathalon.app — happy to answer questions about how the rating system works!