Marx's views fit fine on this triangle. They're mostly in the red area. The communist manifesto outlines his and Engels views well enough. They believed that a totalitarian state by the proleriat was necessary to remove hierarchies and then that state would wither away out of not being a necessity (as social culture would change.) 

can somebody explain why the czarism isnt the same as monarchism? the czar was an absolut Monarch with a cool title, nothing more.

and it doesnt reflect good on things like imperialism.

I belong to Teeqozism

The main difference is scope. A king rules over his own people, the czar over many peoples.

Czarism is a synonym for autocratic government in this case. 

http://en.wikipedia.org/wiki/Tsarist_autocracy

Monarchism does not necessarily have to be autocratic so it won't be tied with tsarism (notice that tsarism is where monarchy and fascism overlap.) 

cant find differences to an absolut monarchie...

http://en.wikipedia.org/wiki/Absolutism_%28European_history%29

Because an autocracy and absolute monarchy are the same thing. Not all monarchies are absolutist/autocratic though. I think if the creator of the diagram just change czarism to autocracy it would lessen the confusion. 

sure, there are feudal monarchies too, and the british have a very strange kind of monarchie. 

but if you talk about monarchie you normaly mean absolut monarchies, in other kind of monarchies the king hasnt much to say(or nothing at all like in britain)

England has been a limited monarchy since the Magna Carta (1215.) Yet the kings/queens still had a lot of power.This isn't a dichotomy. Monarchs can have varying levels of power. Some monarchs only perform executive functions. Some perform both executive and legislative functons. There are such a thing as monarchies where the king/queen has a say, but not an absolute say. So again, it's not a dichotomy. 

But whether his power is absolute or not, the monarch rules one nation and his just authority is derived from how well he rules that nation. The czar/emperor/khan/caliph is self justifying and acquisitive.