What Time Should the last watch show in the below figure?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Can you find the missing piece of the Porsche?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Take one out and scratch my head, I am now black but once was red. What am I?

why number 8549176320 is one of a kind?

Jack and Joseph are well-known golf rivals. One Day during a match, they were level at a score of 30. Jack hit a bad shot and Joseph added 10 to his score. Joseph then hit an awesome shot and he won the game.

How ?

John was piloting a plane behind a car but was never able to overtake it. Why?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?