LOCK BOX
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In front of each of you is a locked box with a secret 4-digit combination.
Each digit of the combination is a number from 0-9.
Numbers will not be used more than once in a combination.
All the numbers are in a specific order, so you must get the order right to open the box.
Each box has a different combo.
The goal of this challenge is to figure out the combination of your box in as few moves as possible.

Once you have read the instructions, send me a random 4 digit number.
I will mail you back, telling you how many of the 4 numbers you guessed are in the combination, and how many are in the correct order.
Then you mail me back a new combination.
This will continue until you have cracked the code.
The person to crack their combination in the least amount of guesses will win Immunity and have a guaranteed 1 in 7 shot at winning this game.
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In case you're confused, here is an example:

(Say the correct code is 7215)

Contestant: 2945

Me: 2 numbers correct, one in the correct order.
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Everyone understand?

You have until 8pm EST tomorrow (Thursday) to figure out your combo.

Forewarning, I am logging off right now to go eat dinner right now so i wont be back until survivor, which i will be mainly watching it but posting blogs and shit during the episode so i can check my mails and stuff during commercials and answer guesses