Fill the grid with digits 1 to 9 so that each row, column and 3x3 box contains each digit exactly once.
Clues in circles give the difference of the digits in the adjacent cells. The clues are coded with letters, same differences with same letters, different differences with different letters.
Solution code: Row 3, column 4.
on 11. November 2023, 21:04 by zrbakhtiar
https://tinyurl.com/mrx9bzzz
on 30. August 2021, 02:31 by Realshaggy
Revised labels.
on 5. December 2020, 12:50 by Bankey
Good fun solving this ! Thank you, Realshaggy.
on 3. December 2020, 17:40 by fpac
this puzzle is so good
on 3. December 2020, 01:23 by Realshaggy
Changed coding to capital letters.
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