I Think I've Found Sum Thing (with sujoyku)
(Published on 27. February 2025, 19:55 by ChinStrap)
Back once again with our 8th (!) collaboration, sujoyku and I wanted to explore duality with index lines. Thank you to all who tested. We wish you joyful solving!
Rules:
- Normal sudoku rules apply.
- Dynamic Fog: The grid is covered in fog. Correctly placing a digit will clear any fog in its own cell, and potentially clear fog in other cells too. No guessing is required.
- Line Building:Draw lines connecting the diamond start and circle end that have matching colors (and letters in the lower left hand corner of the cell). Some line segments are already given, all given segments are revealed at the beginning of the puzzle.
- Except for the given diagonal, lines may only move orthogonally from cell to cell. Lines may not cross themselves or each other, or share cells.
- Lines are simultaneously Index Lines and Region Sum Lines.
- Index Lines:The digit in the Nth cell along the line (starting from the diamond) indicates the position along the line where the digit N appears. For example, 3214 is a valid index line, the 1st digit, 3, indicates that the 3rd digit is a 1, and so on.
- Region Sum Lines: Box borders separate the line into segments with equal sum.
- White Kropki Dot: White dots separate consecutive digits.
All feedback (positive or critical) appreciated!
Solution code: Row 5 left to right (9 digits)
Comments
on 28. February 2025, 17:29 by Nightingale's Code
Beautiful puzzle with a really satisfying solve path. Thank you for sharing!
on 28. February 2025, 15:12 by ChinStrap
Fix rules not displaying key information.
on 28. February 2025, 15:02 by ErwinR
The orthogonality of the lines is not mentioned in the description above. I read that one and struggled quiet a while, before re-reading the rules in the app. Which was obviously of great help. From then on it was a straightforward nice solving path. Thanks.
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ChinStrap: Apologies for that! Badly formatted HTML had swallowed those parts in the page. It is now fixed. Thank you for solving!
on 28. February 2025, 13:05 by Franjo
Very delightful path-building, loved this stuff! Thank you both for creating and sharing this FOW-WOW-puzzle.
on 28. February 2025, 11:45 by marty_sears
Yet another excellent Chinjoyku collab! Really loved the path drawing in this, with some very satisfying restrictions forcing things in a way you wouldn't expect. Lovely use of the fog to guide the solver through it too. Fun!!
on 28. February 2025, 04:53 by Voidslime
Very fun and unique lines!
on 27. February 2025, 23:08 by hardline35
wow incredible setting. thank you!
on 27. February 2025, 21:16 by DubiousMobius
Excellent telegraphing throughout, and lovely variety in the geometric reasoning. Loved it, thanks for setting!
on 27. February 2025, 21:15 by Adrian71
Very cool puzzle, really very enjoyable! Thanks!
on 27. February 2025, 20:53 by sujoyku
Thank you for this wonderful collaboration, ChinStrap! It am always having a great time setting together with you.
on 27. February 2025, 20:30 by Flinty
Clever stuff. TaKe a bow both of you. :)
