1A2B Guess the Number

"A" means that a certain number you guess is the same as a certain number of the answer, and their position is also the same.
"B" means that a certain number you guess is the same as a certain number of the answer but the position of the number you guess is wrong.
The following content refers to "3, 4 or 5 unique numbers" as "Numbers".
== User guess ==
Before starting the game, the app will randomly generate Numbers.
After the game starts, you need to enter Numbers. When you press Done icon, the app will send back the result (e.g. 1A3B).
Repeat the previous step until you successfully guess the answer.
The more you practice, the faster you will get!
== Machine guess ==
Before the game starts, the app will enter a guessing state.
After the game starts, you need to enter the answer to the question (e.g. 1234) displayed by the app. When you press Done, the app will ask the next question.
Repeat the previous step until the app successfully guesses the answer.
PLEASE NOTE: If there is one wrong answer, the app will not be able to guess successfully, so please think carefully before answering!
Here you can feel the guesswork process in perfect condition!