Ornithologically Adjacent Ratios
(Published on 20. March 2026, 11:13 by Jrosas)
THE RULES:
Ordinary sudoku rules.
Across the white dot the two digits are consecutive.
Birds: Birds represent ratios (fractions). Digits across a bird are in a ratio (equivalent fraction) that is the same for that bird throughout the grid. It is for the solver to deduce which ratio or equivalent fraction each bird represents.
Example. A pelican might lie between pairs of digits that share a 3:4 ratio (3/4 fraction.) If so, the ornithologically related pairs across pelicans would be 3/4, 6/8, 4/3, and 8/6. This is only an example. There are no pelicans.
Not all possible birds are given.
My solution video: https://youtu.be/tQSlak3Em6M?si=VCfqwBHWdSeZ_a0D
Featured on Cracking the Cryptic March 21 in an earlier easier version.
https://youtu.be/1_sdlARfHcc?si=8Z5C-XPu3MozzQe3
Solution code: Row 2 left to right
Comments
on 4. April 2026, 03:57 by Jrosas
Link to CTC video
on 27. March 2026, 19:54 by OGRussHood
This puzzle is for the birds... and I mean that in a good way.
on 26. March 2026, 10:12 by QuiltyAsCharged
Very fun puzzle! Tweet tweet, squak
on 22. March 2026, 16:39 by scarfdoku
This was quite fun, thanks a lot.
That went really really smooth. Found it to be a 3 star just because the logic was so smooth. Coloring each bird pair helps a lot.
on 22. March 2026, 12:44 by zeniko
The rules seem to allow for different birds sharing the same fraction. The puzzle still solves nicely with that possibility (and also with fewer birds given than in the more recent CtC edition). Thanks for sharing.
on 20. March 2026, 14:25 by Ragna
Hard one for me. I had pen and paper.
