An entry in Fortnightly Topic Challenge #47: "Wacky Sudokus"

Other puzzles in this series

Welcome to the sixth puzzle in this series! For more information about the series, see the first puzzle and the introduction. Enjoy!

(Added a notice about an upcoming bounty to SS#1)

I also accidentally posted puzzle 6 yesterday, so puzzle 5 and 6 are swapping.

            enter image description here

0 was feeling left out and wanted to join in with the fun...


  • Normal sudoku rules apply
  • There is an extra digit, 0, in all rows, columns and boxes
  • One cell in each row, column and box is split to hold 2 digits

Good luck!

  • $\begingroup$ Congratulations, you made sudoku more complete-cated. $\endgroup$
    – Anonymous
    Commented Jan 15, 2021 at 18:19

1 Answer 1


Starting by going through each box from top to bottom, then left to right:

first iteration of extra digit sudoku

Repeating the process:

A lot of hidden singles later, we get:
final solution to extra digit sudoku

Thanks for another fun solve!

  • 2
    $\begingroup$ Yup! This is probably the easiest out of the 14, wasn't expecting it last that long. Its surprisingly difficult to make this hard, theres just too much extra information :P We're approaching the heavy hitters now, some more challenging puzzles incoming $\endgroup$ Commented Jan 15, 2021 at 18:36

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