An excellent endgame puzzle no comments

White to move. How should White proceed?
Kubbel 1929, presented by Andreas
6n1/3p4/8/1P2k1n1/4P3/B5K1/3P4/8 w - - 0 1
Chess news from Susan Polgar
Source: Susan Polgar Blog

White to move. How should White proceed?
Kubbel 1929, presented by Andreas
6n1/3p4/8/1P2k1n1/4P3/B5K1/3P4/8 w - - 0 1
Source: Susan Polgar Blog