Shadowku
(Published on 12. September 2024, 01:56 by marty_sears)
Rules:
- Two sudoku grids overlap eachother; the dark blue grid and its light blue 'shadow' grid. Both have identical clues. Within both grids, normal sudoku rules apply.
- Digits within a cage sum to the total in its top left corner. The value of X must be deduced.
- The digit on the central spot of a zipper line gives the sum of the other two digits on the line.
Click here to play on Sudokupad
Please leave a comment if you enjoy :)
Solution code: Row 5 of the dark blue grid, from left to right
Comments
on 23. September 2024, 23:21 by Klvsched
Marty really thinking out of the box here. Very lovely!
on 18. September 2024, 10:43 by juggler
What an amazing idea for a puzzle! The only thing about it that made me unhappy is that I didn't have the idea first.
on 15. September 2024, 20:52 by Jolly Rogers
A concept that's easy to grasp but involves a lot of fresh, challenging and fun logic. The type of puzzle that makes the solver feel like a genius for finding each deduction. Thanks as always for setting! Loved it
on 13. September 2024, 20:48 by puzzlepandit
Quite brain scratching for me. I may have missed some basic deduction or two.
But that said the idea is fantastic. This beautiful setting from the author.
on 13. September 2024, 15:15 by Franjo
Quite hard to get my old brain around this ruleset. (Four stars for me.) An amazing puzzle - as usual. I’ll never understand how you can do all this great stuff … Thank you so much for creating and sharing this wonderful piece.
on 13. September 2024, 12:06 by abadx
Marty Sears at best. Pure artwork
on 12. September 2024, 21:46 by marcmees
very nice. thanks
on 12. September 2024, 18:17 by koba1917
Wow! Super awesome puzzle with really great interactions!
on 12. September 2024, 11:49 by TripleABattery
Fascinating idea and a great execution of it. Thank you very much :)
on 12. September 2024, 09:52 by Christounet
Very creative and fun ! Indeed quite impressive that a valid grid exists with this ruleset. Thanks :)
on 12. September 2024, 07:48 by Prof.Dori
Another incredible puzzle by Marty. It is insane how he comes with fresh ideas. This is one of my favorite puzzles from him. Truly masterpiece!
on 12. September 2024, 05:40 by RJBlarmo
Extremely impressive to have this work so well with identical clues in both grids!
on 12. September 2024, 04:02 by vitaminz
I had an awful time starting this, came up with an absolutely bonkers proof of something, only to see that it was staring me in the face the whole time! After that discovery, the real break-in was an absolute thing of beauty, and then everything else resolved quite impressively.
on 12. September 2024, 03:38 by ViKingPrime
I agree with Chinstrap, a lot of the challenge here is re-training your scanning but it's incredibly beautiful. It's remarkable how this solves so well, really hope this isn't a one-off; the idea could lead to so many more brilliant puzzles.
on 12. September 2024, 02:30 by ChinStrap
Really fun. The scanning is a bit insane at first but you develop tools and this solves like a dream after.
