Logic Masters Deutschland e.V.

The standard Sudoku rules apply.
A pink line contains a set of consecutive digits in any order, without repeats.
The difference between any two adjacent numbers on a orange line is at least 4.
The difference between any two adjacent numbers on a yellow line is at least 3.
The difference between any two adjacent numbers on a green line is at least 5.
Every 3 consecutive cells along a light blue line must contain a low digit (1,2,3), middle digit (4,5,6) and high digit (7,8,9).
Digits on a blue line have an equal sum N within each box it passes through.
All numbers on a purple line are prime numbers.
Each digit in the grid represents the height of a building in its cell. Taller buildings obstruct the view of shorter ones behind them. Clues outside the grid give the number of buildings visible from that vantage point in the clue's row or column.
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