Logic Masters Deutschland e.V.

Normal Sudoku rules apply, place the digits 1-9 in each row, column, and box.

Knights Move: Digits separated by a chess knights move cannot contain the same digit.

German Whispers: Consecutive digits along the green line differ by at least 5.

Quadruples: digits in the small white circle must appear in one of the four surrounding cells.

Palindrome: Digits along the grey line read the same forward and backwards.

Killer cages: Digits in cages add up to the total in the corner if given and cannot repeat.

Solve on CTC