Logic Masters Deutschland e.V.

NonoSums

(Published on 4. October 2020, 20:41 by Mark Sweep)

Standard Sudoku rules apply. Numbers outside the grid indicate the sums of digits in groups of shaded cells in the respective rows/columns in order of appearance (a dash (-) means 'up to and including'). Question marks (?) indicate any digit from 0-9 with for instance ??? being a 3-digit number. However, all clues given are a positive integer. There is at least one unshaded cell between groups in a row/column. In addition, unshaded regions, that consist of orthogonally connected unshaded cells, contain at least 5 cells.

Link to the puzzle

Solution code: Row 9, Column 1

Last changed on on 26. April 2021, 15:03
Solved by Martijn, Voyager, zuzanina, NikolaZ, Jodawo, Ours brun, zorant, RockyRoer, misko, abed hawila, polar, Jesper, PixelPlucker, Krokant, ascension, han233ing, steeto
Full list

Comments

on 3. October 2025, 15:58 by han233ing
Sudokupad link(no answer check):
https://sudokupad.app/jfugkfy6ww

Last changed on 21. June 2024, 18:23

on 21. June 2024, 18:21 by RubberMittens
link seems to no longer work.

Clarification: is it possible for the first "?" of a "??" be zero (basically, can "??" be a single digit number)?

on 20. June 2024, 23:19 by RubberMittens
link seems to no longer work.

on 26. April 2021, 15:03 by Mark Sweep
Changed difficulty according to recent personal feedback.

on 13. October 2020, 00:01 by Jodawo
It is a very good puzzle with a logical solve. It gives you just enough information and it's not brutally hard. It is very challenging but was a very enjoyable and satisfying solve. The puzzle holds up and does not fall apart to the very end. There is also an "Easter Egg" after you solve the puzzle for those of you who enjoy watching others solve puzzles like this on YouTube.

Difficulty:5
Rating:98 %
Solved:17 times
Observed:12 times
ID:0004GB
Puzzle combination
Sudoku, Nonogram

Enter solution

Solution code:

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