Remove/hide a specify category-name from the url

I have several categories post:

General
News
Comedy
Competitions
Culture
Gaming
Food
etc

The posts url are in the following format:

www.mydomain.com/category-name/post-title

Example:

www.mydomain.com/food/how-to-make-paella
www.mydomain.com/gaming/game-of-theday

But I would like to hide from the URL the category name ‘general’ so for example.

instead of

www.mydomain.com/general/how-to-learn-spanish

have

www.mydomain.com/how-to-learn-spanish

I have tried some wiring a rewrite rule in the .htaccess but doesn’t work.

Any idea how can I do it?

Thanks!

RewriteRule ^category/(.+)$ http://YOUR_SITE_NAME/$1 [R=301,L]