Understand and Utilize Your Advantages to Develop a Plan
In chess, when developing a plan it's important to consider all of the advantages and disadvantages of the position and to adjust your plan to either secure your disadvantages or attack your opponents disadvantages, thus building on your advantages. It also doesn't hurt to know the thematic plans of the opening of which you are playing.
Today, Erick talks about minor chess piece placement, the Stienitz rule, what is a space advantage, and how having the center is an advantage.
After 20. ...Rf5?? The best move is 0-0-0 (with intentions of 21. ...Rdh8) in order to keep a rook to defend the black h-pawn which is giving the Knight its outpost and to add more pressure to the kingside. After the blunder, Erick opens up the d-file for white to beautifully plant his rook and take any and all advantage away from Black.