nabla: It may be difficult to calculate accurately enough to resign the first turn that it's impossible to win, but it becomes obvious when you're each down to a few pieces. At some point in most games you will resign even live on a board. :)
(esconder) Se apenas lê regularmente alguns fóruns, pode adicioná-los à sua lista de fóruns favoritos indo à página desse Fórum e clicando no link "Adicionar à minha lista de fóruns favoritos". (pauloaguia) (mostrar todas as dicas)