LIVE 1V1 CBT
View rankings →The five-minute challenge
Ten questions. One subject. A learner near your level. Put your revision to the test.
Your arena awaits
Sign in to keep your XP, answers and ELO securely linked to your account.
Sign in to compete— ELOOverall human-match rating
— XPAvailable wallet balance
50 XPEntry stake
100 XPWinner prize · draws refund 50 XP
Your first arena wallet includes a one-time 100 XP welcome credit, not earned XP. Each correct arena answer earns 5 XP after settlement. Completed, server-saved CBT practice also earns 5 XP per newly mastered question, once per question — a way to rebuild your stake. Human matches change ELO; replays and Practice Bot matches do not.
Choose your challenge
Matching uses the same subject and class, within 50 ELO. If no student joins after 30 seconds, we look for a real recorded attempt; if none exists, we clearly label a computer-generated Practice Bot.
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