Logic Masters Deutschland e.V.

Normal Sudoku with diagonals rules apply.

In each square of the grid there is a skyscraper with a height equal to the number inside it. The clues from the margins show the number of visible skyscrapers, as viewed from somebody who is sitting at the distance of one square from the grid.

Example:

In the example puzzle above(a 4×4 Skyscraper only - not sudoku), the 3^rd row is detailed as follows:
• From the left we can see 3 skyscrapers;
• There is one we can see from the right, the 3-floor one, but not the “4” one, because the imaginary line does not intersect “4”.

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