Fill each cell with a digit from 1 to 6. 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. A building is visible if all the other buildings are lower than it. Besides blue painted connected cells must include three buildings with consecutive heights.
Solution code: Both diagonals, first from top left to the bottom right, then from top right to the bottom left.
on 15. August 2021, 23:15 by zhergan
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