Chess is neither a science nor an art. It is what human nature most delights in--a fight.
In mathematics, if I find a new approach to a problem, another mathematician might claim that he has a better, more elegant solution. In chess, if anybody claims he is better than I, I can checkmate him.
The attack is that process by means of which you remove obstructions.
To find the right plan is just as hard as looking for its sound justification.
In Chess, as it is played by masters, chance is practically eliminated.
Loss generally occurs when a player overrates his advantage or for other reasons seeks to derive from a minute advantage a great return such as a forced win.