A dramatic endgame R+R vs R+K

The unusual setting of holding against two rooks with a rook and a knight. The evaluation shows a pretty even game, which hides the fact that it was a battle:

http://en.lichess.org/Z0kB0NKW/black

Good night. Knight was good.

Did you notice the manouvre 43. Ra4! and 44. Rc4 instead of 43. Rc2?!. Nice.

Hmm.. This line was shown in the analysis. Rc2?! pretty much equalized the game. Ra4! it would be a breakthrough for white.