Competitive coding,
simplified.
Duel other engineers in real-time programming matches. Solve algorithms, build APIs, debug code, and climb the competitive ladder.
// CodeComplex Battle Solution#include <iostream>using namespace std;int binarySearch(int arr[], int l, int r, int x) {while (l <= r) {int m = l + (r - l) / 2;if (arr[m] == x) return m;if (arr[m] < x) l = m + 1;else r = m - 1;}return -1;}
Battle Modes
Choose your category. Each mode maintains an independent Elo rating.
DSA
Algorithms under the clock. First correct submission takes the round.
Bug Fix
A broken codebase, a ticking timer. Find it, fix it, win.
Prompt War
Duel with prompts. The sharper instruction wins the judge.
Backend
Design and ship a working API before your opponent does.
Frontend
Pixel-perfect builds, scored head-to-head.
Projects
End to end. Database to UI. No hiding places.
How it works
Go from lobby to battle in under a minute.
Open a Room
Create a match room, select the mode, and share the lobby code.
Rally Rivals
Invite friends or queue against matching ranks (Team A vs Team B).
Duel & Climb
Write code, run automatic testcases, and climb the leaderboards.
The Ladder
Climb the Elo ladder to unlock ranking tiers.