List of countries which donīt need visa:
Andorra, Argentina, Austria, Belgium, Bulgaria, Canada, Chile, Croatia, Cyprus, Denmark, Estonia, Finland, France, Hungary, Ireland, Island, Italy, Japan, Latvia, Lechtenstein, Lithunia, Luxemburg, Korea, Malaysia, Malta, Monaco, Netherlands, New Zealand, Norway, Poland, Portugal, Romania, San Marino
List of countries which need official invitation
(we will help with this, the confirmation should act as this invitation):
Kazakhstan, Kyrgystan, Moldava, Turkmenistan, Ukraine
THE LIST CAN BE CHANGED!
Other countries don't need visa but it's always the best to call to your embassy and ask how is situation with visa for Czech in your countries.