A great chess player always has a very good memory.

In modern praxis lost positions are salvaged most often when the play is highly complicated with many sharp dynamic variations to be calculated.

Lack of proper endgame technique allows many players to escape from lost positions, even without any spectacular play on their part.

Objectivity and presence of mind are essential in such positions where sacrificial temptations are not always resistable.

The endgame is an arena in which miraculous escapes are not uncommon.

A great chess player always has a very good memory.

A real sacrifice involves a radical change in the character of a game which cannot be effected without foresight, fantasy, and the willingness to risk.