********** Apache mod_rewrite **********

/%year%/%monthnum%/%day%/%postname%/
RewriteRule ^([0-9]+)/([0-9]+)/([0-9]+)/(.*)$ /$4 [R=301,NC,L]

/%year%/%monthnum%/%postname%/
RewriteRule ^([0-9]+)/([0-9]+)/(.*)$ /$3 [R=301,NC,L]

/%year%/%postname%/
RewriteRule ^([0-9]+)/(.*)$ /$3 [R=301,NC,L]

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^([0-9]+)/([0-9]+)/([0-9]+)/(.*)$ /$4 [R=301,NC,L]
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

********** mod_alias **********

/%year%/%monthnum%/%day%/%postname%/
RedirectMatch 301 ^/[0-9]{4}/[0-9]{2}/[0-9]{2}/([a-z0-9\-/]+) http://oldal.hu/$1

/%year%/%monthnum%/%postname%/
RedirectMatch 301 ^/[0-9]{4}/[0-9]{2}/([a-z0-9\-/]+) http://oldal.hu/$1

/%year%/%postname%/
RedirectMatch 301 ^/[0-9]{4}/([a-z0-9\-/]+) http://oldal.hu/$1