Black moves knight back and forth and wins


After 16. h4 and 17. g3, the knight on g6 was placed horrible (a nice positional theme to know), so black just improved it. A little like the Breyer Manouvre in the ruy (Nc6-b8-d7). Every time I get in an e4-e5 structure with black, I try to get a position where the Breyer Manouvre is good, 'cause then my opponent will get a little bit puzzles: "What the hell is my opponent doing? I must refute it!"
I like how the black king is completely safe, and the nice Rxf4