Hey CF Community,

Competitive Programming has always been a solo grind — countless hours of solving problems, climbing the rating ladder, and pushing your limits. But what if we made it more dynamic, personal, and real-time competitive?

Introducing a new format that redefines the CP experience: 1v1 Blitz Style Showdowns.

What Is a Blitz Style Showdown?

• A unique format where users can schedule a battle, and others from across the globe can join in.
• Players can set a desired rating range to match with suitable opponents.
• Both participants receive the same set of problems under a strict time constraint.
• The blitz mechanism makes it even more intense — only one player can solve a problem.
• Global leaderboard is created based on user performance(Currently Beta version).

Features of Our Platform

• Solo Battles: Practice in a contest-like environment with a time based point-decay system.
• Room Battles: Compete with your CP friends in private rooms.
• 1v1 Battles: Challenge any Codeforces user globally in head-to-head blitz duels.
• Global Ranking: Rank based on performance in 1v1 battles.
• Network Across Globe: Engage with fellow coders through our built-in chat rooms during matches.

Still in Beta — Your Feedback Matters

This is a bold new experiment, and we’re starting small — testing, improving, evolving. You might face bugs or hiccups — and that’s where you come in. Try the platform. Share your feedback. Help us shape the future of fast-format CP.

Join the Revolution

Tired of passive grinding? Want to spice up your CP routine? Head over to the 1v1 Arena and challenge a friend (or a stranger) — and let the showdown begin.

CF Battleground A New Era of Competitive Programming

Let’s build this together — a new era of Competitive Programming starts now.

UPD 1: Hey everyone, this website is created to give you platform where you can practice(just like contest), collaborate with friends in private room and main feature is you can compete with anyone across world. This gives each rating user a opportunity to compete with other of similar rating, helps in checking what is current level with respect to others of same rating on cf.

I agree it is prone to cheatings during battle, for that only I have provided pre battle room where both participants can discuss about upcoming battle. Both can also agree to play a proctored battle using Gmeet kind of app.

It is an initiative taken for the community to provide a different coding style and can be made a new style of CP when many users come to know about this. So kindly share to your CP friends and college groups. If I get response that people are loving this way of competing, than only in future we can host tournaments using this format and incorporate some other features.

Hey CF Community!!

First of all, a big THANK YOU to everyone who used the platform, gave feedback, and helped it grow. The overwhelming response from the community inspired me to build a better, more feature-rich experience. After many trials, fixes, and feature requests — I’m excited to launch v1.1.0 of the platform today!

Improvements from the v1.0.0:

• Score calculation issue resolved when creating a room — no more inconsistencies! (Credits: thevyomanaut)

• Dynamic questions every time a new contest is created — no repeats! (Credits: uwu12)

• Improved question selection logic — now fetched using problem names, which fixes the Div1/Div2 mismatch issue. (Credits: Eyes_on_me, apollo07)

What’s New in v1.1.0?

• Real-time Chat added inside rooms to collaborate and discuss. (Credits: 1ota)

• Admin controls: Room creator can now remove participants and delete messages. (Credits: practicesingh694)

• Leaderboard updates: See how much time you and other participant took to solve problems.(Credits: pvr04)

• Notes feature: Write notes for problem and download it for later analysis. (Credits: granadierfc)

• Revamped UI for a cleaner, smoother experience across devices.

Thanks again for the continued support! I’ll keep shipping more updates — and your feedback is always welcome. Do check out the new version and let me know what you think!

CF Battleground

To know more about CF Battleground: Blog

Next Release Teaser: Have you heard of Codeforces Blitz Round? Stay tuned :)

UDP: I couldn't put all names in credit, but thanks for your feedback and support.

Happy coding!

Hey Codeforces community!

Like many of you, I'm someone who grinds problems by filtering difficulty ranges on Codeforces, setting a timer on my phone, and diving in. It’s a solid way to practice — but let’s be honest: it doesn’t quite match the adrenaline or pressure of a real contest. No leaderboard. No penalty. No dopamine hit when you solve under time pressure.

So, why not bring that contest feeling into our everyday practice?

Introducing: A Time-Bound CF Practice Platform (v1.0.0)

I've built a platform that transforms your regular problem-solving sessions into competitive, time-bound experiences, either solo or with friends. Here's what you can do on it:

Solo Virtual Contests (with rating filters)

• Select your desired rating range and number of questions.
• The platform fetches Codeforces problems matching your filter.
• You’ll get a contest-like interface with a timer, penalties, and a live scoreboard (even for solo practice!).
• Great for targeting specific problem ranges (e.g., 1300–1500 grind sessions).

Create Rooms & Compete with Friends

• Want to simulate ICPC team practice or just compete with your CF buddies?
• Create a room and invite friends.
• Set your desired difficulty range and time limit.
• Solve problems together, live, with a leaderboard that includes time penalties — just like a real contest.

Why This Is Useful

• Makes practice more engaging and realistic.
• Helps in building contest temperament, also useful for Online Assessments.
• Encourages collaborative preparation, especially for ICPC-style team training.

Try platform here:

CF Battleground

This is version v1.0.0, and while the core features are functional, bugs may still pop up. If you find any issues or have suggestions, feel free to drop an email (provided on the website). I’d love to improve this further with community feedback!

Let’s practice smarter, not just harder. Hope you find this helpful — and may your rating rise like a rocket!

UPD: Kindly provide your feedback when you use it, it will be helpful to create it more robust to errors.