FreeGameDev

It's a combination lock with a twist. The "buttons" are, in usual reading order, 1 2 3 4 5 6 7 8 9 clear 0 backspace.

Enter the correct combination to open the lock to the exit.



Combination should be in the source, right?

Greetings to Leonard Adleman, Adi Shamir and Ron Rivest for the idea.