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

The centre of the third figure is empty. What digit should fit inside?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What is more useful when it is broken?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Can you find out who is the kidnapper in below Picture and why, Explain ?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain