Yin-Yawake
(Eingestellt am 18. April 2025, 18:45 Uhr von webato)
1.All white cells must be orthogonally connected in a single group
2.All black cells must be orthogonally connected in a single group
3. no 2x2 groups of cells can be all the same color
4. A straight line of cells of the same color must not cross more than one region border.
Penpa
Lösungscode: From top to bottom, the number of white cells in each row
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