Logic Masters Deutschland e.V.

This was set for a "Guess the Setter" puzzle prompt, hence the multitude of question marks! There is also a 6x6 version for those who want to familiarise themselves with the ruleset, or just want a snack.

• Normal sudoku rules apply: Place the digits 1 to 9 once each in every row, column and 3x3 box
• German Whispers: Digits next to each other on a green line must differ by at least 5
• Projected Whisper Sums: Clues outside the grid give the sum of cells containing whisper lines in that row or column of the sudoku. A "?" clue is any positive integer and is the same value in all instances

Play on Sudokupad

Play 6x6 version on Sudokupad / View completed 6x6 grid

(This puzzle design was intended as a reference to the first puzzle I published - Starting XI - where every killer clue is a multiple of 11 and there's a big 11 in the grid. At time of writing, that puzzle is still sitting as unrated, if you liked this, you may also like that puzzle.)