Blue Moon
(Published on 4. June 2024, 12:34 by Abdul the Killer)
Standard Sudoku rules apply.
SHADING: In the completed grid, cells containing numbers exactly one greater than an immediate neighbour (diagonal or orthogonal) within their box are shaded (and otherwise unshaded).
YIN YANG: The shaded cells form a single orthogonally connected region, as do the unshaded cells. No 2x2 region is wholly shaded or unshaded.
ARROWS: Values in cells with arrows give the number of shaded cells in the indicated direction. All possible arrows are given.
Solution code: Row 5
Comments
on 26. September 2024, 19:35 by Shuhua Milk
Nice!
on 16. July 2024, 21:06 by sahi1l
Very nice as always. I made a CTC link with the solution in case anyone is interested? https://sudokupad.app/8ktt5xtf2j
on 8. June 2024, 14:32 by Abdul the Killer
Thanks to thoughtbyte, Voidslime, ChinStrap and Fractl for your kind comments.
on 8. June 2024, 03:15 by mole
I have a question, maybe it's dumb but what exactly does "All possible arrows are given" mean?
---Suppose that all of r1c1, r1c2 and r1c3 are determined to be shaded. A consequence of that would be that 3 could not fall in r1c4, because r1c4 would "see" three shaded cells to its left but has no arrow indicating such.
Does that help?
---ATK
on 6. June 2024, 19:34 by Fractl
Very satisfying puzzle! Although you can deduce it from the puzzle itself, I would add that the digits in cells with arrows don't count themselves. Cheers!
on 6. June 2024, 00:42 by ChinStrap
Wonderfully smooth introduction to this style of your puzzles. Hard to judge how easy it is given I've done a lot of them but this was definitely the most friendly one of these I've done.
on 5. June 2024, 18:07 by Voidslime
very special puzzle! At every stuck point I felt like any more deductions were impossible, until making discoveries that immediately felt obvious.
on 5. June 2024, 17:56 by thoughtbyte
Fantastic.
on 5. June 2024, 10:30 by Abdul the Killer
Thanks to everyone for their kind comments.
on 5. June 2024, 09:45 by Snookerfan
Superb puzzle! Not too hard, so the perfect introduction to your great shading rules. Thank you
on 5. June 2024, 09:00 by Prutsbeest
As mentioned, not too difficult but a very very nice concept indeed!
on 5. June 2024, 07:45 by bee
For cells with multiple arrows, does the value indicate the number of shaded cells in each direction or in both directions combined?
---They indicate the number of shaded cells in each direction.---ATK
on 5. June 2024, 06:26 by gdc
Love these shading rules. Very fun puzzle!
on 5. June 2024, 06:18 by Cane_Puzzles
That was so fun, thanks!
on 4. June 2024, 22:55 by LeaVulpina
Utterly stellar.
on 4. June 2024, 22:50 by Wonderment
Perfect puzzle.
on 4. June 2024, 20:03 by Franjo
Only two stars from me, but also the full 100%. This one has a very smooth solving path, brought so much fun to me. Thank you very much for setting and sharing this lovely piece.
