how about if we can "mark" the enemy piece with whatever we think it is? This could be done by selecting the mystery piece and then selecting the type. They would need to be different than the ones that have actually been revealed to tell them apart.
(esconder) Mantenha a sua Caixa de Mensagens limpa, Arquivando mensagens importantes e usando regularmente a opção "Apagar TODAS as Mensagens". (pauloaguia) (mostrar todas as dicas)