Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Fog of War: The grid is hidden in fog. Placing correct digits will illuminate all immediatly adjacent cells.

Dutch Whispers: Adjacent digits along lines must have a difference of at least four.

Negative X: Orthogonally adjacent digits never sum to ten(sums to five are allowed).

The Frog: Determine a path for a frog to travel that visits each of the digits 1-9 once each in ascending order. The frog moves two cells at a time and may only move downward or to the right. (Jumping over every other cell on its path). Every cell that is "jumped" over contains part of a Dutch Whispers line, and the frog may never land on a Dutch Whispers line.

NOTE: It was my intention to have no cells illuminated at the start. However, it is a requirement of the software to have at least one initial light source, so r9c1 is illuminated. This is not intended to be a useful part of the solve.

Solve on CTC