Worst CAPTCHA ever. Trivial for a computer to work out, hard for a human.
Worst as in least effective, but best as in most amusing.
Worst sense of humor ever?
haha, nice! Although wouldn't computers be way better than humans at this?
Yeah, probably, I took a look at the code, it seems easy to extract positions with few jquery lines, and I guess there is probably an API for resolving chess mates problems!
Although, they would probably prefer having computers capable of playing chess sign up than humans that can't.