<IfModule mod_rewrite.c>
Options -MultiViews
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !.*\.(jpeg|jpg|gif|png|ico)$
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
RewriteRule /tutorials/article/447-how-to-use-the-console https://fearless-assassins.com/topic/91367-how-to-use-the-console-enemy-territory/
</IfModule>

I am trying to migrate all my tutorials to the topics but somehow 301 doesn't redirect doesn't work through htaccess. Can someone please help? 

RewriteRule . /index.php [L]

This means to match anything (the dot) that matches the previous rewrite conditions (which is basically anything that does not actually exist and does not appear to be an image) and route it to index.php. The [L] means it is the last rule and no other rules after will be checked.

If you just want to redirect that one specific URL, I would just use the Redirect .htaccess command.

https://linode.com/docs/web-servers/apache-tips-and-tricks/redirect-urls-with-the-apache-web-server/