Author: 真笑(洪卫华), from China, this question comes from his personal blog.
This is a combination of N-sums and Difference.
The last N-Sums Skyscraper Sudoku:
Click enter N-Sums Skyscraper Sudoku
N-sums Sudoku--Difference
1. Classic Sudoku rules apply;
2.The numbers outside the grid indicate the sum of the first N cells in that direction.And N is the number difference between the first two cells.
Here's a penpa+ link with solution check. Dandelo added lines and circles, that have to be filled with the differences. It helps a lot while solving. But now the circles must be filled for the solution check.Thanks Dandelo!
Solution code: Row 3,Coloum 6.(A total of 18 numbers).
on 8. December 2023, 15:26 by glum_hippo
CtC version with answer check https://tinyurl.com/Diff019
on 28. January 2021, 05:52 by Nylimb
Very nice puzzle. Thanks.
on 26. January 2021, 01:41 by cdwg2000
According to the email help from Dandelo and Swaroopg, I remade the Penpa+link of this question. I added lines and circles, that you have to be filled with the differences. It helps a lot while solving. But now the circles must be filled for the solution check.
https://git.io/JtnDf
I hope this is a successful operation. If the solver solves this problem, please try to use the link I made. If there is an error message, please let me know in time and I can go further Improve. thank you for your support!
on 25. January 2021, 20:34 by Dandelo
But you can see that checking is not enabled. Probably you did something wrong when creating the URL with answer check. Or there were elements in the solution, that cannot be checked?
But Swaroop is the programmer of penpa+, he will see much more than I can...
on 25. January 2021, 20:30 by Dandelo
You have to keep the capitals in the link. I found it by guessing it correctly...
I can't see too much from the solving-URL. Better send me an editing-URL. You have my email-adress.
on 25. January 2021, 16:35 by cdwg2000
Repaired Penpa link.
on 25. January 2021, 16:33 by cdwg2000
@Dandelo
I have reproduced it according to the operation steps, but the answer cannot be verified automatically, what did I miss? https://git.io/jtn3m
on 25. January 2021, 16:19 by Dandelo
Just noticed that the link was not the latest version. A circle is missing...
Correct: https://git.io/JtnOA
on 25. January 2021, 15:51 by Dandelo
Short guide:
1. Go into problem mode and type in your puzzle.
2. Go into solving mode and type in the solution. After this, activate the input method, which you want the user to get first. If elements must be filled on the border, it's better to turn border:ON.
3. Open the share menu and fill the form. At the end click on 'URL for solving', then on 'extra options' and in the new menu on 'generate URL with answer check'. Then close the new menu and copy/download/open the link.
on 25. January 2021, 13:33 by cdwg2000
Repaired Penpa link,Thanks Dandelo.
on 25. January 2021, 13:11 by Dandelo
Very good, the puzzle and the combination of the types.
Here's a penpa+ link with solution check. I added lines and circles, that have to be filled with the differences. It helps a lot while solving. But now the circles must be filled for the solution check.
https://git.io/Jtnev
on 25. January 2021, 08:37 by cdwg2000
This is the second variant of N-Sums Sudoku, and there is one at the back. I hope you will like it. It is definitely not a simple piece.