Logic Masters Deutschland e.V.

Standard Sudoku rules apply.
Fill in the grid with the numbers 1-9 so that the numbers are not repeated in each row, column, and each 3x3 area (grid) separated by a bold line.

German Whisper Line rules apply.
Digits along each German Whisper Line (green) must differ by at least five [5].

Double Arrows rules apply.
The sum of the digits along a ‘double arrow' line is equal to the sum of the digits in the circles at either end of the line.

Palindromes rules apply.
Digits on a palindrome line (gray) read the same forwards and backwards

Positive diagonal rules apply.
Digits cannot repeat along the positive diagonal.

Kropki pairs rules apply.
Cells separated by a white dot are consecutive, cells separated by a black dot are in a 1:2 ratio. Not all dots are given.

Odd/Even rules apply.
Digits within Circle cells are Odd.

Play this puzzle on SudokuPad

明月几时有？把酒问青天。