[ksat]

A Few things:

1) For some requests, the correct response can be hidden and just reply 'pass' or 'fail'.

2) You can use javascript to randomize the requests. For example create a random expression and ask it to be evaled

3) Candidates submit the code after completing the challenge.

Thanks for checking out!

[Estragon]

The intro video would benefit by demonstrating this. I had the same question.