What is the coolest letter in the alphabet?

I can be cracked, made, told, and played. What am I?

A river should be crossed by a father, a mother and their two sons and two daughters.
There are some rules that should be followed while crossing the river. There can be only two people in the raft while crossing. The daughters cannot be with their father unless there is the presence of the mother. The sons cannot be with their mothers unless the father is present. Unless the guard is on the board, the criminals cannot be with any of the family members. Only the adults like the father, the guard, and the mother knows to use the raft.

How will they cross the river?

Find the missing letter in the last circle logically in the given below picture.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

What is harder to catch the faster you run?