Logic Masters Deutschland e.V.

This puzzle was made as a bonus puzzle to celebrate the one year anniversary of the Dutch Flat Mates variant created by Flinty. You can find the others from the series here.

Normal sudoku rules apply.

• Dutch Flats : All 5's in the grid must have a 1 directly above it or a 9 directly below it. It may have both, but it doesn't need both.
• Digits outside the grid follows at least one of the following rules :
  • Skyscrapers : Each digit in the grid represents a skyscraper of the corresponding height. Clues outside the grid indicate how many buildings can be seen from that direction, where higher buildings block the visibility of lower buildings.
  • Numbered rooms : A clue outside the grid indicates 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.

The puzzle is available online via CTC-App