Lucy in the Sky (XY Differences)
(Published on 18. August 2024, 18:28 by tallcat)
Normal sudoku rules apply.
XY Differences: Each pair of horizontally connected cells that differ by the leftmost digit in their row is separated by a diamond. Each pair of vertically connected cells that differ by the topmost digit in their column is separated by a diamond (There are no other diamonds in the grid.)
Can be played online at Sudokupad
Solution code: Row 8 (left to right). 9 digits, no spaces.
Comments
on 11. May 2025, 10:38 by Qodec
Can't believe I missed this. What a treat!
on 6. April 2025, 22:10 by awwkaw
This was a great puzzle, that kept relying on the constraints from start to finish.
I'm really impressed with your setting, it keeps feeling new and inventive throughout the puzzles, continuously relying on the constraints and granting the solver a string of new insights. It never just turns into scanning for soduko. Thanks a lot for the great and creative puzzle.
on 1. October 2024, 08:57 by Playmaker6174
Lovely minimalist setting, the logic were also very sweet and pleasant too x)
on 16. September 2024, 09:16 by isajo4002
That had some neat tricks.
on 27. August 2024, 08:38 by fitzie
this is one of the puzzles that makes you scan the grid a lot. great fun!
on 21. August 2024, 02:51 by glum_hippo
Good kitty.
on 20. August 2024, 11:15 by Franjo
Amazing that these few diamonds lead to a unique solution! Thank you so much for creating and sharing this wonderful puzzle.
on 19. August 2024, 05:24 by psninn
Great.
on 18. August 2024, 23:16 by InfiniteChaos
Great idea, really satisfying solve.
on 18. August 2024, 23:12 by wuc
Another very refreshing concept new to me. One hill mid way where I had to look ahead a bit but the rest was very smooth. Great fun thx.
on 18. August 2024, 22:05 by marcmees
great minimalist construction. Thanks
on 18. August 2024, 21:04 by Piatato
The negative constraint is strong indeed! Neat puzzle
on 18. August 2024, 19:58 by HumanBirdsong
Wow, it’s hard to imagine a grid like this solving, but it unfolded beautifully!
