Logic Masters Deutschland e.V.

Normal and Killer Sudoku rules apply.

Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.

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.

EASY VERSION:

Normal and Killer Sudoku rules apply.

Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.

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.

Additionally in both row 1 and column 1 the sum of the numbers outside the killer cages (including the givens) is 13.

(So in row 1: #1+#3+#8+#9=13, and in column 1: #1+#2+#5+#7=13).

The puzzle is also available online.