Screw the captcha to the forms on the Drupal website

Website on Drupal 7.
PHP 5.

To protect against spambots, it is necessary to screw to several forms of registration and feedback (up to 5 pieces) a reliable, but not a demonic captcha, which even a foreigner without a Russian keyboard will calmly pass. But not a bot.

Captcha can be a graphic or JS-puzzle, without Russian letters.

It is not necessary that it be a plugin that is configured in the admin panel.

Alternatively, you can even www.captcha.ru/kcaptcha