Logic Masters Deutschland e.V.

Yin Yang Squares

Rules:

• Normal Sudoku rules apply. 
• Shade some cells so that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected. No 2x2 area may be fully shaded or unshaded. 
• Cells separated by a square must contain a shaded and an unshaded cell, and them cells must sum to the value within the square. Additionally, a square separating two cells will reveal two coordinates (Row X Column Y and Row Y Column X) with X and Y being the digits within them two cells separated by the square. A grey square indicates both coordinates are shaded. A green square indicates both coordinates are unshaded. A red square indicates one coordinate is shaded, and the other is unshaded. 
• All orthogonal unshaded cells must differ by at least 5.

Links -->
CtC App: https://tinyurl.com/3nd7sm4p
F-Puzzles: https://f-puzzles.com/?id=2mds9ewx


Ying Yang Shapes (Colour-blind Friendly Version)

• Normal Sudoku rules apply. 
• Shade some cells so that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected. No 2x2 area may be fully shaded or unshaded. 
• Cells separated by a shape (circle, square or diamond) must contain a shaded and an unshaded cell, and them cells must sum to the value within the shape. Additionally, a shape separating two cells will reveal two coordinates (Row X Column Y and Row Y Column X) with X and Y being the digits within them two cells separated by the shape. An orange circle indicates both coordinates are shaded. A pink square indicates both coordinates are unshaded. A blue diamond indicates one coordinate is shaded, and the other is unshaded. 
• All orthogonal unshaded cells must differ by at least 5.

Links -->
CtC App: https://tinyurl.com/3xrtnfk4