Logic Masters Deutschland e.V.

Normal and Diagonal Sudoku rules apply. Each row, column, diagonal and 3x3 box contains each number from 1 to 9 exactly once.

Killer Sudoku rules apply. The sum of all numbers in a cage (marked with dashed lines) must match the small number printed in its corner. No number appears more than once in a cage.

The yellow box is a MAGIC SQUARE, which means that the digits on each of its rows, columns and diagonals sums up to 15.

The two grey cells are clones of each other.

The puzzle is also available online.