Back after a forced week long absence due to schedules. I’ll write a bit more tomorrow with some puzzles.
Remember that you can solve the puzzles from the League online on the Sudokucup Guest League page with a 24h delay.
Rules for Sudoku. Additionally, each number in the grid represents the height of the skyscraper in each cell. The digits above and to the left of the grid indicate the number of odd skyscrapers seen from the corresponding direction (considering even digits as transparent). The digits below and to the right of the grid indicate the number of even skyscrapers seen from the corresponding direction (considering odd digits as transparent).