ANTI MAGIC SQUARE MATH SUDOKU by Rodolfo Kurchan
The board is divided in 9 squares
In the squares 2, 3, 4, 6, 7, 8, 9 the numbers of 1, 2 and 3 digits that are formed in a ladder are multiples of this numbers.
In the Square 1 you have to make an Anti Magic Square with row sums 11, 18, 16, columns sums 17, 8, 20 and the 2 diagonals sum 10 and 12.
Anti Magic Squares are the squares that his rows, columns and diagonals sum different https://en.wikipedia.org/wiki/Antimagic_square
In Square 5 the columns and the row of the letter H should sum 13 each