Last Resort (with SamuPiano)
(Published on 21. August 2024, 16:07 by sujoyku)
A discussion with SamuPiano has led to a nice collaboration between us two. I have learned a lot about the Split Pea Lines constraint, which can be thought of as pill arrows where the pill digits do not have to be located next to each other. The main idea of SamuPiano and me was to combine the pea lines with other line type constraints. The puzzle “Last Resort” uses region sum lines and its difficulty should lie around 2 stars. If you are looking for other introductory puzzles, I like to refer to Peas and Quiet by SamuPiano which I enjoyed deeply. Also note that this puzzle here actually is the second puzzle we set together. If you like it, be on the lookout since there is more fun pea line stuff to come next week! As always, your comments are much appreciated. We 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.
- Region sum lines: Box borders divide the blue lines into segments with the same sum. (Different lines may have different sums.)
- Split pill arrows/Pea lines: The sum of the digits on a line strictly between two circles is equal to a concatenation of the two values in the circles, in some order. For instance, 3_346_1 could be a valid split pea line, as 3+4+6=13, which is 1 concatenated with 3. (Note: The bounding circles are NOT part of the region sums.)
- Inequality: The inequality sign is a "greater than" and points to the lower digit.
Here you can solve the puzzle online:
Solution code: Column 5 from top to bottom (9 digits in total)
Comments
on 11. October 2024, 14:34 by Lenivaya_Joppa
Thank you for this nice puzzle, dear sujoyku! :)
**
Thank you for your comment, dear Lenivaya_Joppa! I am glad you enjoyed the puzzle.
Kind regards, sujoyku
on 7. October 2024, 18:53 by Rollo
Toll!
**
Vielen Dank für deinen Kommentar, Rollo! Es freut uns, dass Dir unser Rätsel gefallen hat.
Herzliche Grüße, sujoyku
on 23. August 2024, 01:13 by softie
Very nice puzzle! I believe I was able to solve it without any logic depending on the inequality.
**
Thank you for your comment, softie! We are glad that you enjoyed the puzzle. Regarding the inequality: You are right. We were also aware that it is not strictly required for uniqueness of the solution, but we did not find a nice argument other than bifurcating to finish it off. Please feel free to describe in a hidden comment your deductions to complete the central rows and columns.
Kind regards, sujoyku
on 22. August 2024, 16:16 by Franjo
Very nice demonstration of this new ruleset. Thank you very much for creating and sharing.
**
You are much welcome, Franjo, thank you for your comment! We are glad that you liked the pea lines ruleset.
Kind regards, sujoyku
on 22. August 2024, 14:29 by antiknight
Amazing constraint with excellent puzzle flow! I really enjoyed the execution of the idea.
**
Thank you for your comment, antiknight! We are glad that you liked the constraint and enjoyed solving this puzzle.
Kind regards, sujoyku
on 21. August 2024, 20:27 by mathpesto
Beautiful puzzle with a smooth solve! Lovely ruleset
**
Thank you for your kind words, mathpesto! It is great to hear you enjoyed the puzzle.
Kind regards, sujoyku
on 21. August 2024, 20:26 by gdc
Nice flow and not too difficult. I'm really liking this new split-peas constraint.
**
Thank you for your comment, gdc! Nice to hear that you like the split-peas constraint and found the puzzle to be approachable. Our next one (the first one in order we set them) will be more challenging.
Kind regards, sujoyku
on 21. August 2024, 18:09 by damo_89
Lovely introduction to split peas. Not too tricky, not trivial, just really nice.
**
Thank you for your comment, damo_89! A nice introductory puzzle was really what we strived for. So it is great to hear that it has worked out.
Kind regards, sujoyku
on 21. August 2024, 17:31 by Platinum
Great puzzle, lovely logic flow
**
Thank you for your kind feedback, Platinum! We are glad that you liked the puzzle's flow.
Kind regards, sujoyku
on 21. August 2024, 16:14 by SamuPiano
Collaborating with you was an absolute joy! Thank you for taking the leap and tackling this new variant - it means a lot to me!
I can't wait to see what else you have in store with these lines!
**
Thank you for those kind words, SamuPiano! I can only reply in the same tone: Discussing and setting with you has been a blast. Thank you so much for the wonderful collaboration! I hope there are much more to come. You definitely got me hooked on the Pea lines so it is very likely I will set more with these in the future.
Kind regards, sujoyku
