Thou shalt always remember that chess is only a game and rating only a number and thou shalt not take it personally.
Thou shalt not disconnect on purpose when thy game become sour.
Thy language, whichever it is, shalt remain courteous in any occasions.
Thou shalt not use computers nor other tricks to win unfairly against thy opponent and cheekily claim honesty.
If thy opponent geth disconnected, thou shalt wait for him to reconnect, and not send him at once a shoutly message.
When thy opponent thankth thee after a game thou lost, thou shalt not think he is making fun of thee.
Thou shalt acknowledge that mouseslips art not part of the game, thou shalt grant takebacks on obvious mouseslips and not hesitate to ask them when thy mouse is faulty.
Thou shalt not abuse of takeback requests for thoughtlest moves, nor shalt thou ask more time on thy clock without any good reasons.
Thou shalt foreswear, renounce and abjure the vile pleasure of trying to win with the clock the game thou would have lost otherwise by thy poor thinking.
If thou thinkest thou art clever to increase thy rating or upset thy opponent by not respecting the above commandments, God shall punish thee for thy arrogance by giving thee more defeats...