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
• A global Open Challenge where anyone can join, chat in real time, adjust configs, and accept
• Direct Challenge to anyone via Open Challenge
• 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.
• Full record of previous matches and completed tournament brackets!
• Realtime Chat!

Would love to hear your thoughts and feedback...

Start playing on Blitz1v1 today!