Test Your LimitsIn Battle Mode
Pick your topics and rating range. Get a random Codeforces problem. Solve it and earn coins — no pressure, pure skill.
Random Problems
Filter by topic & rating, get a fresh challenge every time.
Earn Coins
Solve the problem on Codeforces and claim your coin reward.
Real Codeforces
Fetches live problems directly from the Codeforces problemset API.
Challenge a Friendin a Custom Room
Create a private room, share the code with your friend, and go head-to-head on the same Codeforces problem. First to submit AC wins!
Create a Room
Get a unique 6-digit room code.
Share the Code
Send it to your friend on any chat.
Battle!
Both get the same problem — first to AC wins.
How It Works
- Pick topics & rating range
- Get a random CF problem instantly
- Submit AC on Codeforces to win
- Earn coins for every solve
- Climb the leaderboard
Pro Tip
Start with rating 1200–1400 to build confidence, then push higher as you improve. Consistent solving beats random grinding!