Standard Sudoku: The digits 1 through 9 appear in every row, column, and box.
Fog: Some grid cells are hidden by "fog" meaning you cannot see their contents. Some fog will be revealed when a cell is correctly filled. The intent of these puzzles is to make logical moves rather than guessing and using the fog reveal to know whether you are correct.
Kropki Dots: Digits in cells separated by a black dot are in a 2:1 ratio. Not all dots are necessarily given.
Renban Lines: Purple lines in the grid are Renban lines. Digits on a line form a set of non-repeating, consecutive digits in any order.
Kakurasu puzzle rules Apply. Kakurasu is a logic puzzle with simple rules and challenging solutions.
The goal is to make some of the cells green in such a way that:
1. The green cells on each row sum up to the number on the right.
2. The green cells on each column sum up to the number on the bottom.
3. If a green cell is first on its row/column its value is 1. If it is second its value is 2 etc.
Odd: All green cells are odd.
Solve online at this SudokuPad link.
Lösungscode: Row 9
am 18. August 2025, 10:15 Uhr von googuee
Updated a wrong wording in the rules.
am 18. August 2025, 10:14 Uhr von googuee
Hello @jinkela114514, my bad, I will fix it. Note that the description on the puzzle is correct. It should be "Odd".
am 17. August 2025, 08:20 Uhr von SudokuFan
"The value of a green cell is decided by the position in its row/column. R3C7 would have a value of 3 for the row sum and a value of 7 for the column sum" It's the other way around, r3c7 would have value 7 for the row sum and value 3 for the column sum
am 17. August 2025, 03:12 Uhr von jinkela114514
"Odd: All green cells are even." This seems confusing for me.
am 16. August 2025, 17:27 Uhr von erml
Very nice puzzle!
am 16. August 2025, 17:05 Uhr von googuee
Thanks @hige for the clarification and the example you provided, I hope it makes sense for the other solvers.
I actually got the rules from: https://www.puzzle-kakurasu.com/?size=10
am 16. August 2025, 16:22 Uhr von hige
Hello googuee,
thank you for this puzzle.
As I struggled a little bit with the rules, please allow me to try a rephrasing:
"1. The value of a green cell is decided by the position in its row/column. R3C7 would have a value of 3 for the row sum and a value of 7 for the column sum
2. The values of the green cells (see rule 1) on each row sum up to the number on the right.
3. The values of the green cells (see rule 1) on each column sum up to the number on the bottom.
Odd: All green cells are odd."