SO

nice this ya got there. i was looking for the mechanical things though >.< 4/10

However, on the Lego side of things, it is pretty cool. I never got that advanced in my playing with Legos. My Legos interacted with Lego people, not real people.

In this case, you add them, b/c of the flaw that you got informed that the digit as it was entered correctly, instead of having to enter the entire combination before you know that X digit was correct; you didn’t get that “positive feedback” until you selected the proper digit. To explain the procedure to crack:

First digit. Try each number, until the display indicates you got the first digit right.

Now you know the first digit. In the worst case, you have tried “100″ numbers.

Now proceed to the second digit.
There are 100 possibilities to try for the second digit.
In the worst case, you learn the second digit after 100 additional tries.

So in 200 tries or less, you now know what 2 digits
Proceed to the third digit, try every possible value, until the display indicates the 3rd digit is correct.

Now you have made 300 attempts (total) in the worst case, and know a total of 3 digits (over half the combination).

Proceed to the 4th digit… 100 more attempts required in the worst case.. (total = 400 tries)

Proceed to the 5th digit… total = 500 tries.

STFU