Logic Masters Deutschland e.V.

This is the tenth installment in my Territories series and the final one for now.

I’ve really enjoyed creating these puzzles, and I think the core ruleset is incredibly versatile, even if the sudokus themselves aren’t always the easiest to construct or solve.

That said, life has gotten busier, and I’m keen to explore some new ideas going forward. The Territories series may not be gone forever, I’d definitely consider returning to it or revisiting the ruleset if new inspiration strikes.

Thanks so much for all the support along the way!

Play the sudoku here:

Sudoku Pad

Rules:

Sudoku rules apply: Normal sudoku rules apply: Fill the grid with digits 1–9, so that each digit appears exactly once in every row and column.

Divide the grid into regions consisting of orthogonally connected cells. Each region must contain exactly one circle. The number inside a circle indicates the number of cells in its region. Digits may not repeat within regions.

In this puzzle, not all circles are given. In the completed grid, all circles must form a single orthogonally connected path. The path must not branch or form any 2x2 block of circled cells but can touch itself diagonally. Adjacent digits along the path must differ by 5 or more.

A blue dot between two cells indicates the cells belong to different regions.
An orange dot between two cells means their digits differ by 4 or more.

Region borders divide each blue line into segments with equal sums (different lines may have different segment sums). Each blue line passes through at least two regions.

I also created an example puzzle (shown in the screenshot below) using the same ruleset, except without the “adjacent digits differ by 5 or more” restriction on the circle path. The solution is unique, but it isn’t quite interesting or 'easy' enough to justify creating a separate link for it.

View the other puzzles from the Territories series:

1. Consecutive Territories - Featured on CTC! (5/5 Difficulty):
   Solve on Logic Masters
2. Non-Consecutive Territories - Featured on CTC! (5/5 Difficulty):
   Solve on Logic Masters
3. Square Territories (5/5 Difficulty):
   Solve on Logic Masters
4. Yin-Yang Territories (5/5 Difficulty):
   Solve on Logic Masters
5. Counting Territories (4/5 Difficulty):
   Solve on Logic Masters
6. Loopy Territories (5/5 Difficulty):
   Solve on Logic Masters
7. Smaller Territories (5/5 Difficulty):
   Solve on Logic Masters
8. Bounded Territories (5/5 Difficulty):
   Solve on Logic Masters
9. Even Smaller Territories (5/5 Difficulty):
   Solve on Logic Masters

As always, any feedback is welcome!