Rules: Modified Sudoku rules apply. Put the digits 0 to 8 once each into every row, column and box.
Mad Fold-In: If the cells between the dashed columns are removed, all clues fold into valid clues in the resulting 4x9 grid.
White Dots: Two digits separated by a white dot must be consecutive.
Split-Pea Lines: The sum of the digits on a line strictly between two circles is equal to a concatenation of the two digits in the circles, in some order. Digits may repeat on a line if allowed by the other rules. For example, 1-346-3 would be a valid way to fill a line as 3 + 4 + 6 = 13 = 1 concatenated with 3. Leading zeroes are allowed, so a line with 0 and 5 in the circles may add to 5 or 50.
Links:
Main Puzzle: https://sudokupad.app/5uz3sl848u
Folded Grid (for reference): https://sudokupad.app/oum501mvgb
Solution code: Column 5, top to bottom (9 digits).
today, 08:38 by ralphwaldo1
Very approachable. Some colouring helped with visualisation, no need for small grid. Neat break-in and nice flow.
on 15. November 2025, 08:07 by Megalobrainiac
My brain hurts!
But... Wow!
on 14. November 2025, 23:14 by MathGuy_12
Fantastic mush up of rules!
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