Checkered
(Published on 1. September 2025, 16:10 by mathpesto)
Rules:
Normal sudoku rules apply.
Digits on a blue line have the same sum in each 3x3 box the line is in.
Wherever 2 odd and 2 even digits form a 2x2 checkerboard pattern, a Battenberg symbol is given. If there is no symbol, the pattern is not allowed.
Solve online:
Solution code: Digits in Row 5 (left to right)
Comments
on 19. September 2025, 23:49 by StephenR
Good work, thanks. Now I need some cake.
on 12. September 2025, 20:52 by AdarshN
Really fun rule set, really satisfying finish, what else could I ask for? Chef's kiss
on 3. September 2025, 22:28 by aerenhart
You made me think of Battenburg cake and now I'm hungry!
Lovely interaction between constraints, the logic went flawlessly. Thank you for the enjoyable puzzle.
on 3. September 2025, 21:33 by Glasgow
Loved it. Thanks!
on 3. September 2025, 16:12 by nunc
Such a beautiful masterpiece. Thanks a lot for sharing.
on 3. September 2025, 07:23 by Crusader175
Very nice!
on 3. September 2025, 00:29 by Jolly Rogers
Brilliant setting, really enjoyed the interactions between the two constraints here and how it ended in such a flourish, thanks for setting :)
on 2. September 2025, 17:06 by Snookerfan
Sublime! So many puzzles in one. Thank you
on 2. September 2025, 12:25 by Franjo
Thank you very much for creating and sharing this lovely puzzle. (I think sujoyku is right in writing Battenburg with u.)
on 2. September 2025, 12:04 by loigor4
Beautiful
on 1. September 2025, 21:27 by sujoyku
Thank you for this fantastic puzzle, mathpesto! It quickly reminded me why Battenburg used to be a favourite constraint of mine. :)
