Nothingness: The point you may be missing is that you only resign the current game, not the entire match. In your example, resigning would mean that you only lead by 4-1 instead of 4-0. Accepting would mean that the current game counts for two.
(esconder) Ao submeter uma jogada, pode escolher o próximo jogo a mostrar, seleccionando a opção apropriada na lista ao lado do botão Submeter. (pauloaguia) (mostrar todas as dicas)