CAPTCHA. Top 10 Worst

    According to Wikipedia, CAPTCHA is a computer test used to determine who the system user is: a person or a computer. The main idea of ​​the test: to offer the user a task that is easily solved by a person, but which is impossible (or extremely difficult) to teach a computer to solve.
    True, sometimes it’s even difficult for a person to figure out what is shown in the picture, or solve a problem.
    So, the top ten worst:

    Source: + several found on the network

    In the comments, you can add your own options.

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