Singles' Day programmers pass the show all strategy (with gadgets)

Singles' Day programmers go through the show. Who can understand the loneliness of programmers? "SF Singles Day programmers go through the show" The intelligence challenge game is on the very hot line to see what level you can hit?
Game address: http://segmentfault.com/game/, game design is very Cool. A total of 10 levels.
Level 1:

It is very simple, that is, a line of text that is not clearly viewed with Css is set.
Level 2:
 

It is also very simple. The Key is in the Html source code comment.
Level 3
 

A Key in the Http Response Header
Level 4
 

 
A Key encrypted by MD5, which is 4 for the website decrypted by MD5. Use the 5-digit MD5 code as the Key to pass.
Level 5

 

Save the image with the square block code as a txt file. Open the txt file and you will be able to see the next Key.
Level 6

 
Google/Baidu: the Key is the next Key.
Level 7
 

The brain turns and gives you the next Key.
Level 8
 

This requires a little inspiration. I saw a form with input, a key in input, and a form with GET? Change GET to POST, and press enter to pass.
Level 9
 

When I saw a bunch of spaces, I started to think it was a number-guessing game. Later I was prompted to accept the Singles Day, and all the spaces were replaced with 1. Then, convert the 8-bit binary into a byte, and then convert the byte Array into an ASCII code. Then, a Base64 string is displayed, stores the string into a file, and decompress the file, the customs clearance Key is displayed.
Here is a small tool for you to convert and get the customs clearance Key.
 

Copy the original key01s of the multiline and store them as a. txt file. decompress the file and you will see the Key for customs clearance.
Customs clearance

 

 
This is the final Url: (you can access it directly)
Http://segmentfault.com/game? K = e4a4a96a69a1b2b530b3bec6734cdf52

 

 

Gadgets for handling the Ninth off:
File:Click to Download