Counting Regions Sudoku
(Published on 13. August 2024, 09:00 by Agent)
Rules
- Normal Sudoku rules apply.
- Ten Arrows: A digit N in a cell with arrows sums to 10 with one or more digits in the direction(s) of the arrow(s), starting with the Nth digit in that direction. For a cell with multiple arrows, each direction counts separately.
- Counting Regions: Divide the grid into orthogonally connected regions. Circles give the size of the corresponding region. Squares indicate that the digit N placed in that square appears exactly N times in the corresponding region. All possible circles and squares are given.
Example Puzzle (6x6)
Main Puzzle (9x9)
Solution code: Column 7 from top to bottom with dashes (-) for region borders (e.g. 35-2187-96-4)
Comments
on 28. October 2024, 14:44 by Christounet
Impressive that this works with such a negative constraint !
on 18. August 2024, 04:43 by MaizeGator
I have so much admiration for a great negative constraint puzzle like this.
on 16. August 2024, 10:25 by ibag
Spannend bis ganz zum Schluss!
on 14. August 2024, 18:47 by cybers
Spectacular! Loved the thrill of some of the bigger steps and the mechanic of the negative constraint.
on 14. August 2024, 10:43 by MagnusJosefsson
Amazing! Such a well designed solution path, the major deductions just keep coming. Incredibly pleasant and fun!
on 13. August 2024, 23:38 by ONeill
Excellent puzzle, a really cool ruleset!
on 13. August 2024, 17:45 by vollbesonderbar
Great Puzzle!
Very long very satisfying journey, never too hard, never too easy ... Great!
on 13. August 2024, 14:29 by Piatato
Cool!
