Hi everyone. I built a Chrome extension that turns Codeforces into a 1v1 arena.
Two players race on the same Codeforces problem inside codeforces.com/battle. Problem on the left, embedded Codeforces editor on the right, shared timer at the top. First Accepted submission wins the round. Best of 3 wins the match.
→ Two modes
- Private rooms. Share an 8-character code with a friend. Casual, no rating impact.
- Ranked matchmaking. Queue up, get paired with someone within ±500 of your CF rating, results count toward a global Elo leaderboard. Only handles verified with the Codeforces API key can play ranked.
→ Install
It's live on the Chrome Web Store: https://chromewebstore.google.com/detail/code-battle/hhjmcfflnibejjnkdnpadgcobbnakkpa
Click "Add to Chrome", then visit https://mirror.codeforces.com/battle and sign in with your Codeforces API key (Codeforces > Settings > API).
→ Feedback
First public version. Bugs, ideas, edge cases, all welcome. Drop a comment below or message me. Especially looking for early ranked opponents, once you've signed in with the API key just open the matchmaking queue.
