Tangled Skeins
(Published on 5. November 2022, 22:38 by DarthParadox)
Place the digits 1 through 9 once into each row, column, and 3x3 box.
The red lines are entropic lines; every set of three consecutive digits along an entropic line must include one low digit (1-3), one middle digit (4-6), and one high digit (7-9).
The blue lines are modular lines; every set of three consecutive digits along a modular line must include all three residues modulo 3, i.e. one digit from {1, 4, 7}, one from {2, 5, 8}, and one from {3, 6, 9}.
Digits in a cage must sum to the clue in the corner.
Solution code: Row 1 followed by column 9, no spaces
Comments
on 9. November 2022, 22:04 by Qodec
Very cool! Thanks!
on 7. November 2022, 15:49 by EmX68
Enjoyed this one! Thank you!
on 6. November 2022, 22:11 by drbs
Very nice puzzle! Fully symmetric, except for the cages. Nice relation to Greek-Latin squares. Loved it, absolutely awesome.
on 6. November 2022, 18:20 by Snookerfan
Very nice puzzle! Thank you so much
on 6. November 2022, 03:43 by wisty
Lovely symmetry going on all over this puzzle! Really cool! My solve was very smooth as well, and not too difficult! Although I can't imagine how someone could solve this without either SudokuPad or pen and paper. I used letters ABC for modular residues and numbers 123 for entropic polarities, centermarking anything I knew. I think this is an intuitive way to follow what is going on in the grid in a way that for example even multicoloring would not convey, especially with the symmetry crossing between the mod lines and the entropic ones.
on 5. November 2022, 22:53 by lerroyy
Incredible puzzle! Thanks
on 5. November 2022, 22:47 by DarthParadox
Correcting typo
