⚔️ Competitive Mode

D2: Duel

Head-to-head math battles. Challenge a friend — or face a random opponent.

Speed plus accuracy equals victory. Can you out-calculate your rival?

How Duel Works

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Create or join a room

Share a 4-letter code with your opponent. They join the same room.

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Race through problems

Same problems appear for both players at the same time. Fastest correct answer wins each round.

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Best of 10

Ten questions per match. Most correct answers (with speed tiebreaker) wins.

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Track your rating

Win streaks and performance feed into your Duel rating. Climb the leaderboard!

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Real-time competitive math is in development. Register your interest below and be first in the arena.