Turing test based on real search queries in Yandex

The fact is that all (or almost all) search queries in Yandex , albeit in anonymized form, are available in real time at export.yandex.ru/last/last20x.xml

Based on this API, I made a small project on Openresty ( nginx + Lua + imagemagick ), providing a high-performance implementation of CAPTCHA .


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There is the possibility of embedding in the form of an iframe .

Github demo

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Images may contain obscene expressions.