Logic Masters Deutschland e.V.

This puzzle uses the Octopus Rules from The Pedalling Pianist together with Region Sum Lines. Thanks to all the testers!

• Irregular Sudoku rules apply.
• Asymmetric Region Sum Octopus
  • Draw 4 lines that must not cross or overlap anywhere except R4C4, where they all intersect.
  • All lines pass through R4C4 in a straight line. Each line contains exactly 2 cells on the edge of the grid where it starts and ends.
  • The 4 lines are independent region sum lines. Region borders divide them into segments with equal sums.
• Cells with ♯ symbols count as one more than their digit for region sum lines. Cells with ♯♯ count as two more and cells with ♭ count as one less.

Example Puzzle

These images show a 5x5 example puzzle (left) and the corresponding solution (right). The four segments of the red line are highlighted in four different colors. You can play the example here.