Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Each row, column, 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.

Little Killer Sudoku rules apply. Digits along the indicated diagonals sum up to the number behind the arrow. Digits on a diagonal may repeat.

Digits along the thermometers must increase from the bulb end.

The puzzle is also available online.