Logic Masters Deutschland e.V.

Just a Little Sum-thing

(Published on 6. November 2024, 20:08 by sujoyku)

This puzzle has been set for a prompt that required setting a puzzle with a newly introduced constraint. To my knowledge, the Sum/Difference Lines have not been applied before. Please let me know if I am wrong about that. :) I like to thank all testers on the CTC and Sudoku Stream Team discord. Special thanks go to Palfly Kampling and SamuPiano who not only tested the puzzle, but also helped me with questions regarding the layout and the wording of the rules. As always, your comments are much appreciated. I wish you joyful solving!

- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.

- Sum/Difference Lines: Each line connecting two circles is a so-called Sum/Difference Line. One of the circled digits indicates the sum of all digits along the line. The other circled digit indicates the difference between the highest and the lowest digit on the line. (Which circle indicates the sum and which the difference has to be determined by the solver. If a circle is bounding multiple lines, it may serve different purposes for those, i.e. it can indicate the sum for one line and the maximal difference of another one.)

Example: A valid line could be 8_152_4 since 1+5+2=8 is the sum and 5-1=4 the maximal difference of the line.

Here you can solve the puzzle online:

Solve on Sudokupad

Solution code: Column 3 from top to bottom (9 digits in total)


Solved by SamuPiano, juggler, fuxia, SKORP17, damo_89, MattYDdraig, marcmees, tourtiflette, AdamPI, ole-1995a, cg24, Mr. Happy, cmigas, anonymoose, Blaimi, SeveNateNine, zrbakhtiar, jalebc, Piff, Jagga, ... Dantheman8urham, stickx, Gosciola19, ogmarcus, Rollo, Firebird, cryptique, softie, josemadre, rhodri, isajo4002, shortcp1, konjecture, timww572, The Book Wyrm, widjo, vmirandaa, tuoni2, Swiddow
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Comments

Last changed on 13. November 2024, 17:44

on 13. November 2024, 17:38 by cryptique
Loved this, the constraint has a lot of scope and possibilities in the future ! Thank you

**
You are much welcome, cryptique, thank you for your comment! It is great to hear that you liked the constraint and see more potential for it.
Kind regards, sujoyku

on 12. November 2024, 19:29 by ogmarcus
g

Last changed on 12. November 2024, 01:44

on 12. November 2024, 01:33 by Dantheman8urham
fun puzzle, the rule are a bit weird at first

**
Thank you for your comment, Dantheman8urham! I am glad you had a fun solve.
Kind regards, sujoyku

Last changed on 9. November 2024, 18:23

on 9. November 2024, 18:19 by Lenivaya_Joppa
Thank you for this nice and interesting puzzle, dear sujoyku! :)

**
You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad that you liked the puzzle and found it to be interesting.
Kind regards, sujoyku

Last changed on 8. November 2024, 23:45

on 8. November 2024, 22:58 by dzamie
That's a fun constraint. Got stuck a couple times, mostly because of an assumption I hadn't realized I'd made.

**
Thank you for your comment, dzamie! I am glad that you liked the puzzle. It is easy to make a wrong assumption when meeting a new constraint. I hope it did not give you too much headache.
Kind regards, sujoyku

Last changed on 8. November 2024, 20:19

on 8. November 2024, 15:42 by Flinty
Very nice!!
!redeemFlintysReview - haha. :)

**
Thank you for your comment, Flinty! I am glad that you liked the puzzle.
Kind regards, sujoyku

Last changed on 8. November 2024, 00:14

on 8. November 2024, 00:12 by dingledork
Good grief, sujoyku, you are forever introducing me to really excellent new constraints. This is a great one. Thank you!

**
You are much welcome, dingledork, thank you for your comment! I am glad that you enjoyed this new variant.
Kind regards, sujoyku

Last changed on 7. November 2024, 20:44

on 7. November 2024, 17:33 by Ragna
Tolle neue Idee! Das hat richtig viel Spaß gemacht. Dankeschön. :-))

**
Sehr gern geschehen, Ragna, vielen Dank für deinen Kommentar! Es freut mich, dass Dir das Rätsel Spaß gemacht hat.
Herzliche Grüße, sujoyku

Last changed on 7. November 2024, 20:43

on 7. November 2024, 16:25 by Calvinball
I just typed out a comment only to realize afterwards it was almost identical to SamuPiano's. Suffice it to say that means I loved this puzzle and thought the difficulty was perfect for a new ruleset.

**
Thank you for your comment, Calvinball! I am glad that you enjoyed the puzzle and found that it had a suitable difficulty for a new variant.
Kind regards, sujoyku

Last changed on 7. November 2024, 20:41

on 7. November 2024, 12:13 by Franjo
Tolle Idee! Und diese Einführung ist perfekt gelungen. Vielen Dank dafür.

**
Sehr gern geschehen, Franjo, vielen Dank für deinen Kommentar! Es freut mich, dass Dir die Idee des Rätsels gefallen hat.
Herzliche Grüße, sujoyku

Last changed on 6. November 2024, 23:46

on 6. November 2024, 23:34 by cg24
this puzzle made me smile :) interesting ruleset, fun puzzle
thank you :)

**
You are much welcome, cg24, thank you for your comment! It is so nice to hear that the puzzle made you smile. :)
Kind regards, sujoyku

Last changed on 6. November 2024, 20:28

on 6. November 2024, 20:18 by juggler
Fantastic execution of a really interesting rule set!

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Thank you for your comment, juggler! Also thank you for posing this nice prompt! I am fond of the Sum/Difference Line constraint and it is great to hear that you like it as well.
Kind regars, sujoyku

Last changed on 6. November 2024, 20:26

on 6. November 2024, 20:11 by SamuPiano
Great idea and I think it has potential for more puzzles in the future!
Also, this is an excellent introduction puzzle to these lines!

**
Thank you for your comment, SamuPiano! I am glad that you liked the variant and think it has more potential.
Kind regards, sujoyku

Difficulty:2
Rating:95 %
Solved:81 times
Observed:5 times
ID:000KMH

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