The game is based on pre-written table txt files with 9 lines of numbers, with zeros as empty slots. To execute the game:

1. create a txt file with content as such:

003000000

007400300

060032059

009000080

008010500

040000600

150290040

004005700

000000900

(example given in file sudoku_003000000.txt)

2. Open run_game.py and update your file name.

3. Run run_game.py