Sudoku 129 Jun 2026

There is a fascinating mathematical footnote in Sudoku history involving the numbers 3, 4, and 129.

As the difficulty level increases, simple scanning will leave you stuck. You will need to look at how numbers eliminate options for other cells. Naked Pairs sudoku 129

: You use memory to track strategies and candidate numbers. There is a fascinating mathematical footnote in Sudoku

Appendix — Mark Scheme (for graders)

You can enjoy Sudoku 129 in two main formats: sudoku 129