Do you think 1 + 1 = 0 is this correct? Does "black + black = white" correspond to reality? VOI is a relaxing minimalistic puzzle based on XOR logic. Your task is to create the specified figure from the proposed fragments. This can be done only using the basic mechanics of the game, namely, the imposition of black parts leads to their disappearance. So you need to correctly position them on the grid, removing unnecessary parts.