D2: Duel

Competitive Math Battles

Challenge friends or random opponents in real-time head-to-head math competitions.

Competitive Math Training

Challenge yourself with speed-based math competitions. D2 Duel mode helps you build fluency through time pressure and competitive practice.

Get paired with opponents at your skill level for fair competitions

Fast-paced 60-second battles testing accuracy under pressure

Compete in daily tournaments and climb the global leaderboard

1️⃣

Click "Find Opponent" and get paired with someone at your skill level in seconds.

2️⃣

Both players see the same problems. First to answer correctly gets the points.

3️⃣

Highest score after 10 problems wins. Gain ranking points and climb leaderboards.

🎯

Students push themselves harder when competing against peers than when practicing alone.

⚡

Time pressure develops fluency and automatic recall of math facts.

🏆

Leaderboards, ranks, and achievements make practice feel like playing a game.

👥

Friendly competition creates a community of learners motivating each other.