I just attempted to go through a game I just played to see where I did things well and where I did things poorly. I think I did pretty well but, at one point, when I was a minor piece ahead, I had a knight at e6 that was in danger from a rook on e8 and I attempted to guard it with a rook on e1 not realizing that the guard could do nothing if my opponent had taken my knight at e6 as my rook at e1 could not leave the back rank because he was guarding my king. Neither I nor my opponent noticed that blunder on my part but I would like to keep from doing that sort of thing again. I think it is clear that I need to pay special attention to the use of any piece that is currently guarding my king. Also, I need to pay more attention to the amount of pieces that a particular piece is guarding as essentially I ended up in what could be called an "over worked rook" situation.