I have gotten pretty good at this game, some of it is luck, some is concentration...anyway, I always start out w/"123" & if one or more of the numbers is either red or green, I then do "111" or "222", etc. until I figure out which of those numbers is in the combination. I then would do the number that I know is in there w/the next few higher numbers. To figure out which place the number is in, I often (if I have a lot of guesses left) will do one of the numbers I know is in there in the place value I think it is in (the first place, 2nd place, etc.) w/other numbers that I know are NOT in there - the trick is not to panic when you get to the last few guesses, you still have a lot of time & by process of elimination & looking at your old guesses you can usually figure out where in the sequence a number is NOT