Logic Masters Deutschland e.V.

Normal sudoku rules apply. Place the digits 1-9 in each row/column/box without repeating.

Sandwich - Clues outside the grid indicate the sum of the digits between the 1 and 9 in the grid.

Zipper - Digits an equal distance from the center of a purple zipper line must sum to the center number on that line.

German Whispers - Digits along a green line must differ by at least 5, and at MOST 8.

Lines that leave the grid are not limited to the digits 1-9, but must still follow the constraints of the line that they are on.

Solve on Sudokupad(11x11 grid, no solution check in-app)