CSES Enhanced 🏆

A browser extension that supercharges your competitive programming training on CSES.fi.

🚀 Install for Free on Microsoft Edge

(Compatible with Chrome, Brave, Vivaldi and others via manual install)

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Features

• Difficulty Ratings: Adds estimated Elo ratings (800-2400+) to problems.
• Practice Timer: Sidebar stopwatch to track your solving speed.
• Speedrun Mode: Track how many problems you solve in 1-5 hour sessions.
• Enhanced Notes: Write personal notes with full LaTeX math support.

Screenshots

Difficulty Ratings	Timer & LaTeX Support
Speedrun Mode	Saved Notes

Installation (Manual)

If you prefer not to use the store or want to develop locally:

1. Download the latest release from the "Releases" tab.
2. Unzip the folder.
3. Go to chrome://extensions (or edge://extensions).
4. Enable Developer Mode.
5. Click Load Unpacked and select the folder.

Tech Stack

• JavaScript (Vanilla)
• CSS (Native Dark Mode)
• KaTeX (Math Rendering)