Logic Masters Deutschland e.V.

Normal Sudoku rules apply.

FOG OF WAR: Not all clues are visible at the start; correct placements will reveal new cells and clues.

PALINDROME (black line): reads the same from both ends.

GERMAN WHISPERS (green lines): adjacent digits differ by at least 5.

RENBAN (pink line): digits form a set of consecutive digits, in any order, without repeats.

THERMOMETERS (grey): digits strictly increase from bulb to tip, without repeats.

KILLER CAGES (dashed): digits sum to the given clue (top-left corner), with no repeats within a cage.

SQUARES = even digits.
CIRCLES = odd digits.

X between two cells = sum 10.
V between two cells = sum 5.

BLACK KROPKI DOT: One cell is double the other.

In the grid there are exactly nine colored regions, made of orthogonally connected composite digits. Each region has a sum that is a prime number (to be determined by the solver).

No Composite Numbers Allowed: White cells may not contain composite digits, so only 1, 2, 3, 5, 7 are possible there.

Consistency of clues: Consistency of clues: Whenever part of a clue (line, cage, thermometer, etc.) is revealed, its background determines the whole clue. If the revealed cell is white, then all cells of that clue are white. If the revealed cell is colored, then all cells of that clue are in the same color.