Mental 3 - exhibition

Mental 3 - exercício para estimulação e treino cognitivo.

O objectivo deste exercício é descobrir a janela igual à assinalada a vermelho, que se encontra escondido no desenho.  

Tentem encontrar e digam o que acharam!

Mental - exercise for training and cognitive stimulation.

The goal of this exercise is to discover a equal canvas than marked in red, which is hidden in the drawing.

Try to find and tell me what you think!