Logic Masters Deutschland e.V.

The Rules:

1. [Sudoku] Normal sudoku rules apply -- fill every row, column, and 3x3 box with the digits from 1-9 once each.
2. [Lines] Each line must be split into two parts such that the digit(s) on one side of the line must sum to x and the digits on the other side of the line must sum to x². Digits may repeat on lines if sudoku allows.
   • Example: A line might be able to be 4-1348, or 238971 because 4² = 1 + 3 + 4 + 8 or (2+3)² = (8+9+7+1).

The Puzzle:

Try it on Sven's Sudokupad