Logic Masters Deutschland e.V.

Normal sudoku rules apply.

Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected and no 2x2 area is fully shaded or unshaded (Yin Yang).

Digits in caged cells show the number of cells of the same color (shaded or unshaded) seen orthogonally from that position, including itself. The "other" color blocks vision (Sight Lines).

Clues outside the grid indicate the digit which has to be placed in the Nth cell in the corresponding direction, where N is the digit placed in the first cell in that direction (Numbered Rooms).

Have fun, leave a comment if you enjoy the puzzle!

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