Sudoku validator Steps to validate sudoku: 1. Rename validate.bat_rename to validate.bat 2. Make validate.bat executable with the following command: 2.1 WINDOWS: chmod +x ./validate.bat 2.2 LINUX or MAC: chmod +x ./validate.bat 3. Run the program using our sudoku.txt or edit this file to have a different result 3.1 ./validate.bat sudoku.txt 4. Enjoy!