In order to improve your game you must study the endgame before everything else; for, whereas the endings can be studied and mastered by themselves, the middlegame and the opening must be studied in relation to the endgame.
Jose Raul CapablancaThe king, which during the opening and middlegame stage is often a burden because it has to be defended, becomes in the endgame a very important and aggressive piece, and the beginner should realize this, and utilize his king as much as possible.
Jose Raul CapablancaThe best way to learn endings, as well as openings, is from the games of the masters.
Jose Raul Capablanca