真笑Puzzles029--69Sandwich Sudoku(3) - Antiknight
(Published on 23. February 2021, 08:06 by cdwg2000)
Author: 真笑(洪卫华), from China, this question comes from his personal blog.
This is a new variant of Sandwich Sudoku. It is created using the variable order of the sandwich numbers. It is also the third question of the series. There may be more interesting combinations of variants later.
69Sandwich Sudoku--Antiknight
1. Classic Sudoku rules apply;
2. If the number 1 appears in front of the number 9, the sum of all the numbers between them is marked on the outside ;
3. The chess knight cells cannot contain the same number.
Solution code: Row 2,Coloum 3.(A total of 18 numbers).
Comments
on 24. February 2021, 14:00 by skywalker
Simple rules and excellent puzzle! Thanks!!!
on 23. February 2021, 14:49 by cdwg2000
@marcmees
Thank you for your objective evaluation. The Sudoku puzzles made by 真笑(Hong Weihua) are all handmade. A variety of different ideas are combined with a purely logical process. They are easy questions suitable for the public, and they are all not too complicated. The logical path can be inferred smoothly, so it is not too difficult.：-）
on 23. February 2021, 14:21 by marcmees
These (your) puzzles all have a nice well defined solution path, which make them a pleasure to solve. No tough break-ins to discover. thanks again.
on 23. February 2021, 11:16 by cdwg2000
@Dandelo
This idea was put forward by "Hong Weihua" when he made Chaos Construction "Mencius". "Sandwich prompt numbers to distinguish order" makes ordinary sandwich Sudoku easier. Based on the fact that the XY order of the sandwich numbers can be interchanged, the idea of "69 numbers can be flipped" is used. This is the reason for the name "Sandwich69".
on 23. February 2021, 11:06 by Dandelo
Great puzzle!
Several times there seemed to be no logical step anymore, but always there was a possibility to go on.
But why do you call them "69"? Already in the other ones, I wondered, what this could mean.
