Because computers turned out to be so bad at chess? :)

Reverse captcha: only robots can reprove one of the Euler problems on the fly? Statistically speaking we can round the people who can into the outlier group, right?

	▲	sshine a day ago \| parent [-]
		That's actually interesting: Like when games detect aimbots, they don't ban people, but put them in an aimbot bracket, so everyone you play with is a cheater. Provide a captcha that is essentially harder for a human to solve, but trivial for either a human or an AI, and transparently separate them into two communities.