A beautiful trap in the english opening

Knights are the one piece that every time an opponent moves one of theirs, I have to make sure that I'm not missing something annoying like this. I have to literally force myself to look at every square it can now reach...like when the computer went 9...Ne5 you gotta make sure that Nf3, Nd3, etc. aren't killers somehow...freaking horses and their jumping...

it missed a mate-in-one.
( ^ _^)
when you loose to an oponnent like this you can't miss banging the table loud..what a lose because of a bishop?