Normal sudoku rules apply.
In addition: each number next to a row refers to the square with a “1” in that row, and is the sum of all squares that are orthogonally adjacent to that square. Each number above a column refers to the square with a “2” in that column, and is the sum of all squares that are orthogonally adjacent to that square.
solving online: penpa
Lösungscode: The numbers in row 4, from left to right.
am 9. Oktober 2020, 00:18 Uhr von marcmees
nice. it seems the rest of the series is harder. I'll have to see how far I get. But lots of fun.
am 7. Oktober 2020, 02:26 Uhr von cdwg2000
Very nice puzzles,thanks!
am 1. Oktober 2020, 06:34 Uhr von Richard
Nice logic in here!
Where does the name Turtle refer to?
[Thorsby]Thanks! The numbers surrounding the 1s and 2s are like the shells of a turtle.
am 20. August 2020, 07:23 Uhr von Richard
@SudokuExplorer: thanks for the hint! :-)
am 20. August 2020, 00:20 Uhr von SudokuExplorer
Very enjoyable puzzle with lots of potential! (Perfect for Richard's SVS) Thanks for making this fun one :-)
am 18. August 2020, 21:48 Uhr von Voyager
Thank you for this very nice sudoku !
am 17. August 2020, 10:23 Uhr von Thorsby
Changed link
am 17. August 2020, 10:15 Uhr von Thorsby
Change in link
am 17. August 2020, 10:03 Uhr von Thorsby
Change link
am 17. August 2020, 09:58 Uhr von Thorsby
Change in link
am 17. August 2020, 07:18 Uhr von Thorsby
Added penpa link
am 16. August 2020, 13:27 Uhr von Thorsby
Added arithmetic label
am 12. August 2020, 21:58 Uhr von Thorsby
Removed English label
am 12. August 2020, 11:16 Uhr von Thorsby
Small change to text
am 12. August 2020, 09:25 Uhr von Thorsby
Small change to text