Logic Masters Deutschland e.V.

Sudoku: Normal Sudoku rules apply.

Journey: Starting at the highlighted cell in the top left and ending in the highlighted cell in the bottom right, draw a line which moves only orthogonally and does not touch itself, not even diagonally. (For the avoidance of doubt, this means that if any two cells in any 2x2 box are both visited on the journey, the section of journey which connects them cannot leave that box in between visiting those two cells.)

German Whisper: The journey follows the rules of a German Whisper - if a cell is on the journey, the next cell along the journey must differ from it by at least 5.

Checkpoints: All but one of the circles are checkpoints on the journey. Each checkpoint must be visited by the journey, and counts how many cells on the journey are directly visible orthogonally from the checkpoint, including itself. Cells not on the journey block line of sight. The remaining circle - you must determine which! - is a booby trap. The journey may not go through the booby trap circle.

Arrows: For each arrow, the sum of the digits on the arrow is equal to the digit in the circle.

Watchtowers: Each rectangle is a watchtower, which counts the number of journey cells EITHER in its row, OR its column, OR its box - you must determine which for each watchtower. There is no restriction on watchtower cells being on the journey.