MATH
PUZZLES THAT FIGHT BACK.

1v1 duels · adaptive Glicko-2 ratings · no signup

ENTER THE DUEL → VIEW RANKS

How it works

01 / DRAW

A competition-math problem appears, calibrated to your current rank.

02 / RACE

You face a real player's stored attempt — or a calibrated AI — at your level. Fastest correct answer wins.

03 / CLIMB

Your Glicko-2 rating moves. Climb from Iron to Grandmaster.

Tiers

IRON BRONZE SILVER GOLD PLATINUM DIAMOND MASTER GRANDMASTER