Even Lighting
(Published on 15. February 2023, 23:02 by Jay Dyer)
I made this puzzle in response to a prompt on my Patreon page, asking for an akari hybrid puzzle. I realised while making it that akari is surprisingly difficult to do hybrids with, at least by my usual approaches, because the coupling between light placement and shading geometry is actually quite weak. I'm pretty pleased with how this turned out though.
Rules:
- Normal sudoku rules apply.
- Some cells (to be located by the solver) are doublers, and have a value equal to double their digit.
- The even-valued cells (including doublers) form a single orthogonally connected area. Every even cell must see at least one doubler in a straight line horizontally or vertically (odd-valued cells block the view). Doublers must not see each other.
- The values of cells in a cage sum to the total in the corner of the cage (if given). Digits may not repeat in a cage (though values may repeat).
Solution code: Row 5 and column 9.
Comments
on 1. March 2023, 07:20 by antiknight
Awesome idea with the akari and doublers!
on 26. February 2023, 03:26 by pianobarry87
When this started to click for me it was very exciting! Thanks for the incredible puzzle!
on 25. February 2023, 17:27 by goldcakes
Very fun, almost forgot the akari at the end but I remembered last minute.
on 25. February 2023, 14:42 by ddx2407
Very nice puzzle. Tricky, but not too difficult. I enjoyed solving it. Thank you, Jay.
on 21. February 2023, 02:11 by Agent
Fantastic puzzle! Nice variation on doublers.
on 20. February 2023, 02:41 by BHUNTER47
What a masterpiece.
on 19. February 2023, 16:19 by JayForty
Beautiful creation. Thanks!
on 19. February 2023, 02:33 by madhupt
This is a fantastic puzzle as expected from Jay Dyer. Got stuck for a long time at one juncture but the interplay of 6, 7 and 8 in box 8 which transmitted to boxes 7 and 9, which I did not see readily, showed the rest of the way. Thanks a lot for sharing.
on 16. February 2023, 23:41 by Jesper
Great puzzle, thanks!
on 16. February 2023, 19:52 by DVFrank
Very nice! :^)
on 16. February 2023, 16:10 by Swafnan
Brilliant puzzle. Thank you very much!
on 16. February 2023, 10:29 by h5663454
It turns out that there can be such a combination...
It's very hard, very challenging, but also very interesting, and it's also full of sense of accomplishment after taking 77 minutes to make it.
All in all, a great puzzle!
on 16. February 2023, 05:03 by bansalsaab
Very nice idea.
