Better captcha for WOT

Google research declares the simple text captcha dead. They remain
difficult for human beings, but machine learning can crack them 99.9% of
the time.

I propose a better captcha for WOT that works like:

- The challenge to be solved: Add the numbers presented in the puzzle
series that ONLY show trees.

- It presents 5-10 puzzles. The legit puzzles randomly sprinkled throughout.

- What puzzles look like: A number is drawn across an image backdrop of
trees and other objects.


That should raise the bar and not be hard to switch to.
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