Partially filled \(6 \times 6\) Sudoku grids are categorized based on the arrangement of the values in the first three rows. This categorization is then employed to determine the number of \(6 \times 6\) Sudoku grids.
Citation
Sian K. Jones, Stephanie Perkins, Paul A. Roach. On the Number of \(6 \times 6\) Sudoku Grids[J], Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 089. 33-43. DOI: .