Logic Masters Deutschland e.V.

Build Your Own Region Sums

Rules:

Normal sudoku rules apply.

Along region-sum lines, digits on the line have the same sum within each region the line passes through. The lines must be determined by the solver.

All ends of lines are marked with grey dots. Lines can only move orthogonally, cannot touch themselves orthogonally, cannot branch, and cannot cross themselves or other lines. Lines must start and end in different regions, and cannot re-enter regions.

Solve on f-puzzles, CTC, or Penpa+.