hi is this your own puzzle system or does the type of puzzle have a name?
These puzzles are based on "Master Mind", a 2-player game from the 1970s!
My game is different because you don't make guesses, so you just get to solve the puzzles. Sort of like the difference between Chess and Chess Puzzles! I think it feels a lot different to play it this way. But you can search online for Master Mind and try playing the original game against a computer!