How ESP works

Choose a competition language, meet one partner, read the same generated response, and independently infer the hidden prompt in no more than 300 characters before the server-owned 60-second deadline.

Both answers are judged in isolation. Rails takes the best valid points for each rubric facet and gives the pair one shared team score. Only pairs with two valid submissions are ranked.

After both answers are judged, ESP reveals scores and rubric-based feedback. Leaving before pairing does not consume eligibility; leaving after the contest starts may forfeit it.

Private and invite-only access is revocable. Revocation stops further player actions without reopening or rewriting an existing contest.