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.