Logic Masters Deutschland e.V.

Inspired by Marty's Sears' Yin Yang Yogn.

Rules:

Normal sudoku rules apply.

YYY: Divide the grid into three regions of orthogonally connected cells. A 2x2 area cannot belong to any one region.

In one region, the value of a cell is equal to its digit (normal). In another, the value is equal to half its digit (halvers). And in the third region, the value equals double its digit (doublers).

Region Sum Lines: Each blue line exists within at least two of the three regions. Values on a blue line have the same sum in each region the line passes through. If a line passes through a region multiple times, each individual segment sums separately. (Note: "Region" here refers only to the YYY regions and not the 3x3 boxes.)

Solve online:

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