Rules:
Fill each cell with a digit from 1 to 7. Every digit must appear once in any row or column. Every digit inside the grid represents a building with a specific height. The digits outside the grid indicates the number of buildings visible from that direction. In addition, some fields in the edge rows/columns are marked with circles. The numbers entered in these fields must show how many skyscrapers are visible from that place in the inner 5x5 square. All these fields are marked
Solution code: row 5, column 7
on 19. October 2020, 16:48 by SudokuExplorer
Here's a penpa+ link: https://tinyurl.com/y48ud5qz
Challenging, but absolutely worth solving! I'm a little bit fearful of the quintuple skyscraper now. :-)
on 21. April 2019, 13:01 by zorant
Thank you very much
on 21. April 2019, 07:59 by AnnaTh
Veeeeery nice!!!
on 18. April 2019, 12:12 by jessica6
Very good. Looking forward to triple skyscrapers...