Frustrating Position

This was a frustrating position for me, I could not find a way to break through with the rook, finally agreed to a draw. Can anyone see a win in this with the rook?Game 12315576

Here....White to play.



33.Rc5 appears to win a piece.

In later phase of the game I would have considered Nf4 and possibility of sacrifice of Knight on h5 or g6.
It requires a lot of far-reaching calculation, though.

I had an "impression" that White could chase out black Knights with his King and Rook, but that was a mirage.

Originally posted by @greenpawn34
Here....White to play.

[fen]4r3/np1k1pp1/4p2p/1n1pP3/3P4/5N1P/1R3PP1/2R2K2 w - - 0 33[/fen]

33.Rc5 appears to win a piece.

45. h5!
instead of f5 and blockade; idea is breakthrough with Pawns
45. ...Nc6
46. Nf3 Nba7
if King goes to stop white Pawns,then Pb7 is lost
47. g5!
threat is gxh6 and then bringing Knight to g4
If Black tries waiting policy than White can manouver his Rook so as to either capture Pb7 or infiltrate into Black soft belly through g-file.

White must win here.

The end position is a fortress.
For the last time, you could have won with 57. Ra4 instead of trading knights.
Your main positional mistake in the endgame was that you closed the entire king side.
As rightly observed, h5 instead of g5 should have been better.