The Codeforces BlitzCup format felt very exciting and competitive.
Inspired by that, we explored whether similar real-time 1v1 coding platforms exist. While some options were available, none delivered the experience we were looking for, so we decided to build our own.
Introducing Blitz1v1
Blitz1v1 is a real-time competitive coding platform designed for 1v1 Codeforces-style duels where two players solve the same problem simultaneously and compete for the fastest correct submission.
Key Features:
- Real-time 1v1 coding duels
- Arenas and tournament brackets
- Live pairing: instantly match with available opponents for immediate duels
- Integration with Codeforces API for automatic submission validation
- Fair play mechanisms such as problem locking and timed rounds
- Instant live desktop notification when a problem is solved
- Live spectator mode with low latency updates via WebSockets
- Head-to-head analytics, leaderboards, and player profiles

Would love to hear your thoughts and feedback!
Start playing on Blitz1v1 today.









Amazing site. Smoother experience. Highly recommended.
I think it’s one of the best site for 1v1 blitz. First thing I notice its smooth and fast. Second one its choose good problem. Highly recommended.
Going to test it and give my feedback ...
MishkatIT could u help me login , I typed my handler and a password , I even solved a problem sugested and nothing seems to work .
Alright, instead of solving the problem, you need to submit a compilation error to the generated problem. for example, type "hello" and submit it...
Alright, instead of solving the problem, you need to submit a compilation error to the assigned problem. For example, type "hello" and submit it...
I see , this worked for me and I might say that you've done a great job you and the team. Congrats
broooo, this is a great project, very good implementation, but you won't believe it, but I also had such an idea and I was at the development stage, it's sad that I didn't have time to finish it before you. Good luck