Shady Circles
(Eingestellt am 19. Januar 2025, 15:30 Uhr von Ridhwan)
My first setting with yin yang constraint. Hope you enjoy it.
Shady Circles
Rules:
1. Normal sudoku rules apply.
2. Shade some cells such that all shaded cells are orthogonally connected, all unshaded cells are orthogonally connected, and no 2x2 area is fully shaded or fully unshaded.
3. A circled digit in the shaded cells indicates exactly how many circles contain that digit in that shaded cells and vice versa.
4. Digits along an arrow must sum to the digit on that arrow's circle. ADDITIONALLY, the arrow and its circle must have different shading, eg if r1c2 is shaded, then r1r2c1 must be unshaded.
Do have a go!
Link(with solution check): CTC
Lösungscode: The solution code is the popup message that appears when you solved the puzzle.
Kommentare
am 4. Februar 2025, 21:47 Uhr von Tank
are the arrow circles also included as counting circles?
yes it is :)
am 27. Januar 2025, 19:08 Uhr von Lias
Nice puzzle, like the solve.
+1 for goldennumbers comment on clarifying the rules about "the same holds for unshaded", that wasn't very clear to me.
am 25. Januar 2025, 01:22 Uhr von goldennumber
Very good - I think in the puzzle description it's worth clarifying in rule 3 saying "the same holds for unshaded" rather than vice versa, just to be super clear
am 21. Januar 2025, 22:36 Uhr von Chaka
Great puzzle! Definitely solvable, if you know about the special features of the Yin-Yang rule. Super fun solve that opened up some freh logic regarding circle countings! Thank you for this gift, Ridhwan!
am 21. Januar 2025, 03:26 Uhr von Titus Adduxas
Dry nice puzzle, definitely made easier if you knew the secrets of Yin-Yang
am 21. Januar 2025, 00:19 Uhr von Ridhwan
Thank you all for kind words!
am 20. Januar 2025, 22:57 Uhr von spatzle
super fun and engaging but not overly difficult! love this
am 20. Januar 2025, 15:21 Uhr von IveejNaris
Box 3 is beautiful
am 20. Januar 2025, 13:32 Uhr von Franjo
Very nice puzzle, and a pleasure to solve it! Thank you very much for creating and sharing.
am 19. Januar 2025, 22:38 Uhr von VitP
an excellent puzzle.
you need to be an expert in yin/yang procedures to even get started, and an expert in counting circles to continue. however, all those procedures can be learned in a few minutes, so this puzzle remains accessible to beginners.
watch out for an unexpected twist in cc.
am 19. Januar 2025, 20:40 Uhr von Qodec
Awesome puzzle, enjoyed that!
am 19. Januar 2025, 19:27 Uhr von LeaVulpina
Very, very, very nice! =D
am 19. Januar 2025, 16:03 Uhr von mathpesto
A fantastic puzzle! Super smooth, and some rather unique deductions with counting circles.
