When most of us learned chess, we were first taught to grab material and have a material advantage. This is not that bad, but playing positonally is usually better. Take a look at the starting position of the example below. You'll quickly notice that black has a material advantage, but is in a terrible position. Go ahead and solve the puzzle, and then check the move list.

 

P.S. If you see a mistake, please comment on it so I can change it.