Counting Territories
(Published on 17. January 2026, 14:33 by masetab)
Play the sudoku here:
Rules:
Sudoku: Fill the grid with digits 1–9 so that each digit appears exactly once in every row and column.
Regions: Create regions of orthogonally connected cells. Each region contains exactly one circle, and every circle belongs to a region. The digit in a circle gives the size of its region. Digits may not repeat within a region. Orthogonally adjacent cells within the SAME region may not be consecutive. Not all cells in the grid must belong to a region.
Counting Circles: A digit in a circle indicates how many times that digit appears in all circles in the grid.
A black dot between two cells means one digit is double the other. An X between two cells means the digits sum to 10. The two digits connected by the pink renban line are consecutive. An arrow outside the grid gives the sum of the digits along the indicated diagonal.
Example Completed Puzzle with this Ruleset:
View my other puzzles in this series:
- Consecutive Territories - Featured on CTC! (5/5 Difficulty):
Solve on Logic Masters - Non-Consecutive Territories - Featured on CTC! (5/5 Difficulty):
Solve on Logic Masters - Square Territories (5/5 Difficulty):
Solve on Logic Masters - Yin-Yang Territories (5/5 Difficulty):
Solve on Logic Masters
Any feedback is welcomed!
Solution code: Digits from even-sized regions in row 8 from left to right
Comments
yesterday, 19:00 by War
As has been said, break-in was the challenge, afterwards everything flowed nicely. I would give the break-in a 4* but the rest 2* difficulty
on 19. January 2026, 17:16 by gfoot
Tricky break-in and after that everything else flowed very nicely, well put-together!
on 18. January 2026, 06:31 by Briks
I would rate it 4 stars, liked it a lot.
on 18. January 2026, 01:19 by Guvenistan
I found the break-in to be very profound. I really enjoyed the interplay of the logic throughout the solve.
