Black ovals are placed between EACH couple of digits whose ratio is 2 OR 3.
Cells in FIRST 6 columns that are Chess QUEEN's move apart cannot contain the same digit.
Cells in LAST 6 columns that are Chess KNIGHT's move apart cannot contain the same digit.
One 3x3 square is a MAGIC SQUARE.
F-Puzzles link (by Narayana): https://f-puzzles.com/?id=y3qzmoqh
Enjoy!
Solution code: Row 8
on 28. October 2020, 15:08 by JivkoJ
@marcmees: Thank you for trying the puzzle! Using the Magic Square at the right moment is the difference between straight solution and unavoidable bifurcation. Glad you liked it.
on 27. October 2020, 15:42 by marcmees
nice puzzle with confusion between Queens and Knights at the borders that I totally forgot the Magic Square. Liked it.
on 25. October 2020, 14:33 by JivkoJ
F-Puzzles link added.
Thank you Narayana!
on 25. October 2020, 12:40 by Narayana
Here is a link so that people can play it online.
https://f-puzzles.com/?id=y3qzmoqh