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Not very experienced with Apache but i would try: 
 
RewriteRule ^nl\blog\webdesign\in-2013-surfte-20-procent-via-een-tablet-of-smartphone$ &nbsp;nl\blog\webdesign\in-2013-was-gemiddeld-20-een-mobiele-website-bezoeker
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<div class="content wysiwyg-content">
i'm trying to point 
 
/nl/blog/webdesign/in-2013-surfte-20-procent-via-een-tablet-of-smartphone 
 
to 
 
/nl/blog/webdesign/in-2013-was-gemiddeld-20-een-mobiele-website-bezoeker 
 
This is what i have now. 
What is wrong? 
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RewriteRule ^nl/blog/webdesign/in-2013-surfte-20-procent-via-een-tablet-of-smartphone$ &nbsp;nl/blog/webdesign/in-2013-was-gemiddeld-20-een-mobiele-website-bezoeker
</div>
</div>

i'm trying to point

/nl/blog/webdesign/in-2013-surfte-20-procent-via-een-tablet-of-smartphone

to

/nl/blog/webdesign/in-2013-was-gemiddeld-20-een-mobiele-website-bezoeker

This is what i have now. 
What is wrong?

	RewriteRule ^nl/blog/webdesign/in-2013-surfte-20-procent-via-een-tablet-of-smartphone$  nl/blog/webdesign/in-2013-was-gemiddeld-20-een-mobiele-website-bezoeker

problem with url rewrite

A web server refers to the software that helps to deliver web content that can be accessed either through the Internet or through an intranet. The primary function of a web server is to store, process and deliver web pages to clients. The communication between client and server takes place using the Hypertext Transfer Protocol (HTTP). The most common use of web servers is to host websites, but there are other uses such as gaming, data storage, running enterprise applications, handling email, FTP, etc.

Web Servers

The Apache HTTP Server is a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards. Typically Apache is run on a Unix-like operating system, but it is available for a wide variety of operating systems, including Linux, Novell NetWare, Mac OS-X and Windows. Released under the Apache License, Apache is open-source software.

Apache Web Server

Web development software is used to create websites for both the Internet and intranets. Software can be either locally installed or operated through a cloud interface, and ranges in complexity from simple text editors to full-fledged integrated development environments (IDEs) that include graphics, video, audio, scripting and database support.