troydaniels: Normally the game was over after move 32. b9. Black would not need to capture the three white stones, as they are dead. By capturing at a4, black places a stone inside own territory, reducing it by 1. This could make the difference between win and loss, though not in this case, where white wins anyway.
It is necessary to mark the dead stones after passing, so that the score is calculated right.
(esconder) Se pretende saudar alguém na sua língua nativa consulte o nosso Dicionário do Jogador, acessível através do link "mais acerca das línguas", por baixo das bandeiras. (pauloaguia) (mostrar todas as dicas)