Logic Masters Deutschland e.V.

Rules:

• Place the digits 1 to 9, once each in every row, column and region. The grid represents the surface of a Toroid. Cells with the same colour belong to the same region. 
• The digits in any domino are not consecutive.
• The teal line contains one digit each from {1,4,7}, {2,5,8} ,{3,6,9}.
• The center of the lilac line is sum of the digits along the line with the same distance to the center.
• A black dot between cells indicate a 1:2 ratio between the cells.

The puzzle's name comes from the observation that no domino contains digits of a single entropy, low= {1,2,3}, middle={4,5,6} and high={7,8,9}. 

Have Fun!

Link zum SudokuPad