Can you find the key in the picture below?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

With the help clues provided in the image, can you find the 5 digit key?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

What part of Turkey has the most feathers?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I always drive my customer away.

Who am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?