Pupils take the weekly challenge and bring back a four-character code. Enter each name and code here; the page checks the code against every possible score and records the one that matches, so scores cannot be inflated. Everything stays in this browser. Nothing is sent anywhere.
| Name | Score | Code |
|---|
The code is a short checksum of the week, the score and the name, so a pupil cannot change their score without the code failing. It is not encryption; a determined pupil with the site's code could forge one, so treat it as a classroom convenience, not an exam.