Click a board size and click reset to generate a desired board
Click the Solve button to turn on and start the Auto-Solve
If the Auto-Solve box is checked, Auto-Solve is turned on
If the Auto-Solve box is checked and the board is not solving, that means there is no guaranteed cell to be unveiled. Either click a cell or flag a cell for the Auto-Solve continue Auto-Solve
Uncheck the Auto-Solve box to turn off the Auto-Solve feature