A knight on the side
Gets fried.

This little poem is a reminder that knights generally belong toward the middle of the board where they have more choices.

Do the math -
A knight in the middle ... has 8 moves.
A knight on the side ... has 4 moves
A knight in the corner ... has 2 moves.

What's the right move for White?

Answer:
The knight is on the side. Let's fry it! It only has 4 choices and our bishop, properly placed, can guard all four squares. Bd5! Now the knight can't move without getting taken by the Bishop and next turn we'll play b4 with a deadly attack. Good night, bad knight!