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.

The hardest game to win is a won game

I keep on fighting as long as my opponent can make a mistake.

By positional play a master tries to prove and exploit true values, whereas by combinations he seeks to refute false values ... A combination produces an unexpected re-assessment of values.

To refer to the oft mooted question, "Which piece is stronger, the Bishop or the Knight?" it is clear that the value of the Bishop undergoes greater changes than that of the Knight.

Vanity should never tempt a player to engage in a combat at the risk of loss of health. It is bad enough to lose without the additional annoyance of paying doctors' bills.

The laws of chess do not permit a free choice: you have to move whether you like it or not.