Tricks with Knights & Rooks

In an earlier post, I had a messy position from the Eickelman-Slade game in the club championship. Working my way through it I came to a position wherein White has to win with a Rook, g- & h-pawns versus a Knight & h-pawn. It turned out that winning the position wasn't too hard, but it put me in mind of the famous Em. Lasker-Ed. Lasker game from the New York, 1924 tournament. Looking up that position in my trusty copy of Fundamental Chess Endings, I came across the following study.

J. Moravec, La Strategie, 1913

White to move and win

This will eventually resolve itself into a R vs N endgame. If the knight is close to the king, the defending side can often draw the game, as in the Lasker-Lasker game above. However, sometimes the knight can be separated from the king, even when they're close together at the start. To see some endgame magic, check below the fold for the solution.