Question

Calendario matemático febrero 2020 problema en familia 1-2

Answer 1

The personality solving the letterdocu is : Godfrey Harold Hardy. See attached.

 A letterdoku is solved by placing the letters on the grid so that the letters are not repeated in each row and column of the array.

 In this particular case, in the black boxes the name of the author of the text appears in the sentence: G H Hardy, by Godfrey Harold Hardy, author of the work Apology of a Mathematician from which the text in the heading was extracted.