## The Sudoku Game II (sudokuInt)

This code implements the sudoku game using general integer variables (for an implementation using binary variables see model sudoku. The sudoku game ask to complete the partially filled grid with numbers between 1 and 9 so that every row, every column, and the 9 non-overlapping 3 × 3 subblocks contain each digit 1 to 9 exactly once (see, Figure 1).