It is a well known phenomenon that the same amateur who can conduct the middle game quite creditably, is usually perfectly helpless in the end game. One of the principal requisites of good chess is the ability to treat both the middle and end game equally well.

The main Objective of any operation in an open file is the eventual Occupation of the seventh or eighth Rank.

Even the laziest King flees wildly in the face of a double check!

The threat is stronger than the execution.

Strategically important points should be overprotected. If the pieces are so engaged, they get their regard in the fact that they will then find themselves well posted in every respect.

The great mobility of the King forms one of the chief characteristics of all endgame strategy. In the middlegame the King is a mere 'super', in the endgame on the other hand - on of the 'principals'. We must therefore develop him, bring him nearer to the fighting line.

In the middlegame, the king is merely an extra, but in the endgame, he is one of the star actors.