On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Different lights make me strange by changing me into different sizes. What am I?

Can you find the key in the picture below?

You bought me for dinner but never eat me. What am I?

What can go through glass without breaking it?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

When can we add 2 to 11 and get 1 as the correct answer?