Humanely dealing with humungus crawlers

> Notably, because the challenge does not include its own javascript solver, even a smart crawler isn’t going to solve it automatically. If you include the solution on the challenge page, at least some bots are going to use it.

Why not add a fake js solver, which includes an incorrect solution?

(Yes, once they've fallen for this, I might be tempted to start serving them the bitrotted versions of my pages:)