NexonKR finally beat the botters, but

Configure it to lock the account for 24hours if the (very simple) question is answered wrongly 3 times or not answered?

A question like, "1 + 1 = ?". In a picture, so the hacking program can't just read it and solve it.

Where did you get the impression that an advanced hacking program couldn't read 1+1=? from a picture and solve it?