one more lonely bird
(Published on 23. June 2025, 09:51 by aqjhs)
There once was one lonely bird and here is another one to make it company.
- Normal sudoku rules apply.
- Global Indexing: Cells in the same relative position with respect to their box form an indexed set: if the cell in position P for box A has the digit B, then the cell in position P for box B must have the digit A.
- Dutch Flatmates: Every 5 in the grid must have a 1 directly above it, or a 9 directly below it. It may have both, but it isn't necessary.
- Box 9 is a magic square: all its 3-cell rows, columns and diagonals have the same sum.
- Cells joined by a bird have digits in a 1:N ratio, where N is the same positive integer number for both birds.
Solution code: Row 1
Comments
on 30. June 2025, 23:03 by NotSoMagnifique
A fab little swim with the swans! I think I need to try my hand on a global indexing puzzle.
on 24. June 2025, 21:01 by abadx
A highly constrained indexing rule combines quite well with Dutch flat mates in order to make a quick and easy snack
on 24. June 2025, 04:37 by Pairot
Loved it. Felt great when I realized this indexing rule is also an expansion of disjointed groups, cool idea.
on 23. June 2025, 21:52 by anewbis
I must be stupid cuz I keep getting it wrong :(
on 23. June 2025, 16:15 by Exigus
A little tricky start and then the indexing works it's magic. Thanks!
on 23. June 2025, 15:05 by aqjhs
oops, fixed typo on solution code
on 23. June 2025, 14:41 by Karitsu
Loved the hidden magic box decor. Almost missed it! Quick and delightful solve :) Tried rows 1, 2, 3, and column 1 for solution code - none were successful.
Thanks for updating the solution code!
on 23. June 2025, 13:42 by Matti64
I agree.
on 23. June 2025, 13:02 by jalebc
code?
on 23. June 2025, 11:19 by SirWoezel
I think the solution code is wrong.
