Echoes
(Published on 19. October 2026, 04:25 by UncleLogic)
Echoes is a variant Sudoku using Echo Lines.
Sudoku:
Place the digits 1–9 in every row, column, and 3×3 box, with no repeats.
Echo Lines:
The absolute differences between consecutive digits along each purple line must form a palindrome.
For example, on a five-cell Echo Line, the consecutive differences could be 1, 3, 3, 1 or 2, 4, 4, 2.
Play online:
Solve in SudokuPad
I hope you enjoy it!
More puzzles by me can be found at UncleLogic.com.
Solution code: Enter the digits in Row 7 from left to right.
Last changed on -
Solved by kangaroo, plinke, jalebc, Sionnach, geronimo92, SKORP17, Harold, dumfries, butch02, penny121, PippoForte
Comments
on 19. October 2026, 13:57 by Sionnach
Really loved this puzzle! I haven't encountered this type of line before and it was fun to figure out.
