Contribute correction: Cubo Magico

  _____      ___      _  _     ______  
 / ____||   / _ \\   | \| ||  /_   _// 
/ //---`'  / //\ \\  |  ' ||   -| ||-  
\ \\___   |  ___  || | .  ||   _| ||_  
 \_____|| |_||  |_|| |_|\_||  /_____// 
  `----`  `-`   `-`  `-` -`   `-----`