Hi Folks!
The CF Blitz tournament on Codeforces is usually limited to top coders. I've always found that format insanely exciting — fast problems, pure pressure, and that race-to-AC feeling.
I really wanted to experience that kind of 1v1 intensity more often, not just once in a while. So I built CF Blitz — a simple place where anyone can jump in and feel that same blitz energy anytime.
What is CF Blitz?
A minimalist platform for real-time 1v1 competitive programming using Codeforces problems.
No clutter. Just you, your opponent, and the clock.
Key Features
Seamless Login — Sign in instantly with Google and link your Codeforces handle.
Ranked Matchmaking (Random Game) — Jump into queue and face someone near your skill level. Win matches. Gain CF Blitz Rating.
Challenge a Friend (Custom Game) — Create a private lobby, configure duration and problem difficulty, and share a join code.
Why This Works
Blitzing pushes you into flow state. There's no room for procrastination, no time to overanalyze every edge case for 20 minutes. You trust your first instinct and execute.
Head-to-head competition turns practice into a game — and games are addictive. You get faster. You get sharper. You get more confident.
Join the Community
We've launched a Discord for feature requests and bug reports:
discord.gg/JftKvyVdz
So jump in, challenge a friend, beat a stranger, or just warm up your coding reflexes. The Blitz Arena awaits!
Ready. Set. Blitz!
Website not loading? Try changing your DNS — this fixes it for most users.
Go to Settings → Network → Private DNS → Specify hostname and enter dns.google
Auto comment: topic has been updated by Satyanshu111 (previous revision, new revision, compare).
How do I trust you that it is safe?
Do crosscheck following points:
Firstly, the link is https secured. I have not yet bought a custom domain for this site, thus it has been deployed on railway app for the time being. You can verify its security by clicking on the lock icon in address bar.
Login is handled securely through Google OAuth — I never see or store your password. It only requests basic profile info for authentication. You can also review the permissions shown by Google before signing in.
ok
no, this is clearly unsafe DO NOT TRUST this guy.
Hi, could you please elaborate on what grounds do you find it unsafe?
I have given a short description above, willing to clarify any genuine doubts.
nah
tried it, got a previously solved problem
Hope you would have solved that question within 5 mins.
Join the discord channel for feedbacks and suggestions, working on adding unique questions feature.
What is the link?
Website: https://cf-blitz-production.up.railway.app/
Discord: https://discord.gg/JftKvyVdz