Would you have seen the winning move after kb6?

I didn't https://lichess.org/nFh7Ci4J/white#68

@Viohl said [^](/forum/redirect/post/4otDHpQN) > Look what the engine tells when i open the game in analysis. No Nb3! Interesting. So, basically the black king is too far away to stop the knight jumping into blacks territory? But still, it's too complicated for me to see in a real game