After entering the program, a number will appear at the bottom of the homepage, representing the number you need to remember. When you click on it, some numbers you need to remember will be displayed at random locations on the interface. For a period of time, you need to remember all the information displayed. After hiding the information, fill in the numbers where they match.
Remember, you must fill in the matching numbers in ascending order of numbers to be correct, otherwise it will be wrong.