Balanced Sudoku
(Published on 6. August 2022, 04:03 by Nell Gwyn)
It's just a normal Sandwich/Arrow sudoku, except it uses negative numbers. That should be pretty simple, right?
(in all seriousness, this shouldn't be too difficult... figuring out a notation system might be tricky though)
RULES:- Every row, column, and 3x3 box must contain all the numbers [-4, -3, -2, -1, 0, +1, +2, +3, +4] once each (IE, normal sudoku rules, but with the numbers -4 to +4 instead of the numbers 1 to 9).
- Sandwich Clues: Numbers outside the grid give the sum of the numbers sandwiched in between the -4 and the +4 in the indicated row or column.
- Arrow Clues: Numbers along an arrow must sum to the number in the circle. Numbers can repeat along an arrow, when allowed by other rules.
Penpa link: https://tinyurl.com/4axdbhsr
NOTE: For Penpa's answer check, use the Sudoku number tab, and color the negative cells gray.
Solution code: Rows 1 and 2, left to right, with minus signs in front of the negative digits (e.g. "-401-332-2-142310-1-2-34-4"
Solved by 1791976183, explodingsnail, Knitabit, Ambrose, lsw770770, cdwg2000, Niverio, ThePedallingPianist, marty_sears, JayForty, gdc, lmdemasi, karlmortenlunna
Comments
on 6. February 2023, 21:43 by Niverio
Creative approach, and it did yield some very unique interactions!
on 15. September 2022, 06:32 by Ambrose
What a puzzle! Tough but very satisfying
