Japanese Sums Sudoku - with negatives
(Published on 4. September 2023, 14:33 by RockyRoer)
The Rules:
- Normal sudoku rules apply - fill every row, column and 3x3 box with the digits from 1-9.
- [Japanese Sums Sudoku]Shade some cells. Shaded cells will have to be shaded one color for positives and a different color for negatives. Clues outside the grid represent the sum of runs of shaded cells in that row or column, in order from left to right or top to bottom. An unshaded cell must separate multiple runs that have been clued.
The Puzzle:
Play on CTC Software - answer check on digits should work, but it won't check if positive/negative shading is correct.
Play it on Penpa if you'd prefer. Answer check on digits only, but not positive/negatives.
Solution code: Row 4's SHADED cells only -- include negative signs for negative numbers: ex 8 -2 6 7 -1 4 (?? digits) (spaces or commas aren't included in solution check, so feel free to use them to separate numbers if you'd like.)
Comments
on 15. September 2023, 17:15 by peacherwu2
You rock!
on 8. September 2023, 19:30 by samuel1997
Very fun puzzle! Quite easily to come up with a wrong logic though.
on 5. September 2023, 17:26 by Franjo
Fantastic puzzle! I had a great time playing around with all the parity-stuff and the JS-constraint, up to clearing the last deadly pattern. Thank you so much for setting and sharing this masterpiece.
on 5. September 2023, 08:05 by marcmees
Nice idea. thanks
(got started wrong yesterday with clue "21" in R8 ... thanks to wooferzfg for the new version)
on 5. September 2023, 03:39 by RockyRoer
Made link more pretty thanks to wooferzfg!
on 4. September 2023, 19:16 by RockyRoer
Fixed solution code
on 4. September 2023, 19:12 by wooferzfg
Here's a more readable version:
Penpa+: http://tinyurl.com/285f3csj
SudokuPad: http://tinyurl.com/2hwuhkyz
