ABABA
(Published on 15. August 2025, 05:37 by Greenscribble24)
AB Series:
ABABA
ABBA
BBABB
AB Squared
Triangular Letters
Now I Know My ABCs
Place 5 As and 4 Bs in every row, column, and box.
Letters along a red line must alternate between A and B.
Letters along a blue line must all be the same letter.
Solution code: Row 9
Comments
on 9. January 2026, 13:51 by CHalb
Please add the Sudoku tag.
on 28. November 2025, 11:03 by CHalb
Please add the Sudoku tag.
on 11. October 2025, 21:03 by teetofu
I am still getting used to these kinds of puzzles and this was really fun. Thanks for setting!
on 16. August 2025, 17:27 by RailMan
It is a nice and easy puzzle. Thank you for sharing. If you do make a series then don't worry too much about the difficulty. Try to focus on making the logic interesting and fun to solve. That tends to make better puzzles.
You could try palindrome lines, irregular regions, extra regions, Region Sum (counting) lines
If you swap letters for 0/1 you can also do a lot of other things like Slow Thermos, Little Killer clues or Arrows,
Have fun and keep setting puzzles.
on 16. August 2025, 06:24 by Greenscribble24
- Changed online solving tool (I didn't know it was possible to input letters on SudokuPad)
- Linked ABBA
on 15. August 2025, 16:58 by Fisherman
Yes for series. Yes for two lines for now. Yes for sudoku-pad link. If you substitute colors for AB, the final grid is soothing and serene. Job very well done.
on 15. August 2025, 14:29 by Sudokode
Nice puzzle! Maybe try introducing a new type of line to make it harder. Thanks for setting and sharing!
on 15. August 2025, 06:14 by Greenscribble24
Thinking about turning this into a series if enough people like it. However, I'm not sure how difficult they can really get.
