// Reveal neightbours with recursion
    public void findNeighbors(int row, int col) {
        if ((row >= 0 && row <= BOARD_SIZE - 1) && (col >= 0 && col <= BOARD_SIZE - 1)) { //Check if row and col is not out of board
            if ((cell[row][col].getState() != ButtonState.OPEN) && (((Integer) (cell[row][col].getTag())) != -1)
                    && (cell[row][col].getState() != ButtonState.FLAG) && (cell[row][col].getState() != ButtonState.INTERROGANT)
                    && (((Integer) (cell[row][col].getTag())) == 0)) {
                cell[row][col].setBackgroundResource(R.drawable.boton_opened);
                cell[row][col].setState(ButtonState.OPEN);
                findNeighbors(row - 1, col);
                findNeighbors(row - 1, col - 1);
                findNeighbors(row - 1, col + 1);
                findNeighbors(row, col - 1);
                findNeighbors(row, col + 1);
                findNeighbors(row + 1, col - 1);
                findNeighbors(row + 1, col);
                findNeighbors(row + 1, col + 1);

            } else if ((((Integer) (cell[row][col].getTag())) > 0) // Not empty
                    && (cell[row][col].getState() != ButtonState.FLAG) && // Not flag
                    (((Integer) (cell[row][col].getTag())) != -1) && //Not bomb
                    (cell[row][col].getState() != ButtonState.INTERROGANT)) { //Not interrogant
                cell[row][col].setBackgroundResource(R.drawable.boton_opened);
                cell[row][col].setState(ButtonState.OPEN);
                cell[row][col].setText(String.valueOf(cell[row][col].getTag()));
                cell[row][col].setTextColor(numberColor(cell[row][col]));
                //cell[row][col].setTextSize(10);
                cell[row][col].setTypeface(null,Typeface.BOLD);
            }
        }

    }