Are you sure you want to clear all values on the Sudoku board? This action will erase all your progress, and you won't be able to undo it. Proceed?
Are you sure you want to restart the Sudoku game? This action will restart the game with a new board of same difficulty, and your progress will be lost. All cells will be cleared, and you won't be able to undo this. Proceed with the restart?
Board can be solved only if it does not contain errors. Please fix any errors before continuing.