Recurring
Daily challenge
One ranked attempt per UTC day. The puzzle is the same for every player, scored on the server from what you submit — never from a number the browser claims. Practice runs are unlimited and stay off the board.
2026-10-12 UTC · Night codes · target 90s · max 1,000
Night codes
A four-digit keypad drawn from the Halcyon night log. Enter the code the day's clues point to.
Enter the four-digit code described by today's written clue. Digits 0–9. No colour and no sound are required.
Sign in to start a ranked or practice run. Your score is written only after the server checks your answer.
Observation hour eleven ends at eleven forty on the stopwatch card.