Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Box 5 is a magic square - all rows, columns and diagonals must sum to the same number.

Boxes 2 and 8 are semimagic squares - all rows and columns (but not necessarily diagonals) must sum to the same number.

The central cells of each box (highlighted yellow) also form a magic square (made up of nonrepeated digits).

Cells separated by a knight's move or a king's move (in chess) cannot contain the same digit.

Numbers outside the grid are the sum of the digits along the indicated diagonal.

Digits on an arrow must sum to the digit in the arrow's circle.

Play this puzzle on SudokuPad