Live competitive network
Precision under pressure. Code to win.
OLeetle is a server-authoritative head-to-head coding race. You and one opponent get the same problem at the same moment. First to pass every test wins.
Final verdictAccepted
YouWinner
6 / 6 hidden cases passed
Opponent3 / 6 cases
Server-authoritative
The clock, the verdicts and the result are decided by the server. Nothing your browser reports can change who won.
Same language, same problem
Pick Python or JavaScript and solve the same problem as your opponent.
Hidden tests
You see how many tests passed and why they failed — never the test data itself.