Arrow Sandwich
(Eingestellt am 9. Juni 2021, 03:01 Uhr von VykkDraygo)
- Normal 6x6 sudoku rules apply.
- Digits outside the grid indicate the sum of the digits between 1 and 6 in that row or column.
- Digits along an arrow sum to the circled digit.
Play in Penpa+.
Lösungscode: Row 5, from left to right.
Kommentare
am 22. Oktober 2021, 13:17 Uhr von uvo_mod
Labels ergänzt.
am 12. Juni 2021, 05:20 Uhr von VykkDraygo
Removed extraneous clue.
am 9. Juni 2021, 19:31 Uhr von VykkDraygo
@Skorp17 Das ist richtig.
am 9. Juni 2021, 19:26 Uhr von SKORP17
sind die Zahlen in den Circles ausserhalb des Grids auch zuständig für die Abstände zwischen der 1 und der 6???
am 9. Juni 2021, 16:16 Uhr von VykkDraygo
As was pointed out, with both the current rules, and construction, the puzzle was ambiguous (and had multiple solutions). It was also more difficult than intended.
The 9 sandwich arrow clue should resolve this issue.
I really appreciate the comments pointing out the issue, as they were very helpful.
am 9. Juni 2021, 15:41 Uhr von VykkDraygo
That would be me overlooking the possibility more than anything else. Penpa allows the user to input digits over 9 when using the number function, but not with the sudoku function.
The original construction had the left arrow as a given. That would probably help to resolve the issue, because I see exactly what you mean. The extreme givens don't help in that regard (and I think actually set you up to expect that they would be large).
That's certainly my fault, and shows my inexperience in setting. I'll make an update to the puzzle to reflect this change.
I really appreciate the feedback!
am 9. Juni 2021, 15:27 Uhr von DiMono
This puzzle has multiple solutions. I got the following, which did not validate as correct but is a correct solution based on the constraints:
234156
615243
456312
123564
341625
562431
That solution gives sandwich sums of 10 for row 4 and column 4, which is valid based on the provided rules. If arrows may not sum to a number greater than 9, then that must be stated as a rule, or else this puzzle is not unique.
am 9. Juni 2021, 08:46 Uhr von brandon_bot
I wasted a lot of time not realizing the outer arrow sums were restricted to 1-9. Maybe this is very obvious for other people with regular experience using Penpa+.
am 9. Juni 2021, 03:38 Uhr von VykkDraygo
Slight clarification to the sandwich rules. (I realize this is likely unnecessary, considering how ubiquitous the ruleset is.)
