Anti-Arrow
(Published on 12. October 2022, 06:28 by Eclectic_Hoosier)
Puzzle Type: Anti-Arrow
Puzzle Link: F-Puzzles
CTC Software Link
Rules:
- Classic: Normal Sudoku rules apply.
- Arrow: Digits along an arrow branch sum to the number in the arrow's circle.
- Arrows may not overlap or share cells. They may cross, as long as they do not share any cells. The circle is considered to be part of the arrow.
- Any arrow that is completely or partially outside of the shaded regions must extend in a straight line from the circle, and may not bend. There is no such restriction on arrows contained entirely inside the shaded regions.
- An arrow’s circle may have more than one arrow branch attached to it. Each branch separately sums to the number in the circle. If a circled sum is possible under these rules, then there must be a branch from the circle.
- All possible arrows are given.
Solution code: Row 6, left to right
Comments
on 28. June 2023, 02:14 by Myxo
Absolutely wonderful! Loved it from beginning to end.
on 31. January 2023, 06:39 by polar
'Arrows may not overlap or share cells... All possible arrows are given.'
A strict reading of these rules combined would imply that an arrow such as 6-312 or 8-413 is not allowed, and yet I'm quite sure this puzzle is not solvable assuming such a restriction. Can you please clarify what is / isn't allowed?
@polar: Any arrow that is completely or partially outside of the shaded regions must extend in a straight line from the bulb, and may not bend. There is no such restriction on arrows entirely inside the shaded regions.
Second to last rule
-EH
on 13. October 2022, 04:11 by wisty
Really cool twist on magic squares! Loved the mid-solve relabeling, and the ending is clever as heck :)
on 13. October 2022, 02:22 by virtual
Absolutely wild that this solves cleanly! I hadn't realized it was possible to fill a box without creating a valid arrow.
on 12. October 2022, 19:56 by JayForty
Very interesting puzzle and brutally hard, at least for me :D I might have missed a clever trick or two.
on 12. October 2022, 19:07 by StefanSch
Das war ein ziemlich schwerer Brocken. Aber schön war's schon ;-)
