User-agent: Riddler
Disallow: /

User-agent: Yandex
Disallow: /

User-agent: SemrushBot
Disallow: /

User-agent: Baiduspider
Disallow: /
User-agent: Baiduspider-video
Disallow: /
User-agent: Baiduspider-image
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: *
Disallow: /search.php
Disallow: /printthread.php
Disallow: /private.php
Disallow: /imts2.php
Crawl-delay: 30