Dont agree with Nastok.

A puzzle is when you have to use your brain instead of skill.

And here is just precision, you know what you have to do, just need to be lucky.

And the mines are horrible. Never spam mines like that..
You can make those mines a bit better or use oneways..
Like here, at the bottom:
http://numa.notdot.net/map/97008
Oneways look much better than milon randomly palced mines

But no, this should not be a puzzle.

This should be a puzzle. 3.5/5

quite hard at first but i eventually got it 3.5