Logic Masters Deutschland e.V.

A while ago SennyK kindly asked for more puzzles with yin-yang regions that are modifiers.

• Normal sudoku rules apply.
• Divide the grid into two orthogonally connected regions such that no 2x2 area is completely contained in a region. All cells in one region will have a value of D+1, where D is the digit on the cell, and all cells in the other region will have a value of D-1.
• Box borders divide lines into components with the same value product.

Online in Sudokupad

See also:

• requital introjection
• 2B or -2B with MathGuy_12
• top shelf 2% lactose free
• a hot summer nightmare
• the second bowl