def main():
# create test board
board_unsolved = [[0, 0, 8, 7, 1, 5, 0, 0, 3], [0, 1, 0, 0, 0, 0, 7, 0, 4],
[0, 0, 0, 0, 3, 0, 0, 5, 8], [0, 0, 2, 9, 4, 6, 0, 7, 0],
[0, 9, 0, 3, 0, 1, 0, 8, 0], [0, 3, 0, 8, 5, 7, 9, 0, 0],
[1, 5, 0, 0, 6, 0, 0, 0, 0], [8, 0, 7, 0, 0, 0, 0, 6, 0],
[4, 0, 0, 5, 7, 2, 8, 0, 0]]
board_solved = [[2, 4, 8, 7, 1, 5, 6, 9, 3], [3, 1, 5, 6, 8, 9, 7, 2, 4],
[9, 7, 6, 2, 3, 4, 1, 5, 8], [5, 8, 2, 9, 4, 6, 3, 7, 1],
[7, 9, 4, 3, 2, 1, 5, 8, 6], [6, 3, 1, 8, 5, 7, 9, 4, 2],
[1, 5, 9, 4, 6, 8, 2, 3, 7], [8, 2, 7, 1, 9, 3, 4, 6, 5],
[4, 6, 3, 5, 7, 2, 8, 1, 9]]
sudoku = Sudoku.SudokuPULP()
sudoku.addBoard(board_unsolved)
solution = sudoku.solve()
