Solving Sudoku with Integer Programming in R

GitHub link for data: https://github.com/bkrai/Managing-Ope... Sudoku Rules Recap A 9×9 grid must be filled so that: • Each row contains digits 1 to 9 exactly once • Each column contains digits 1 to 9 exactly once • Each of the nine 3×3 subgrids contains digits 1 to 9 exactly once Some cells are pre-filled (clues).