Answer:
What word becomes smaller when you add 2 letters to it?
It is where kings, queens, knights and bishops go to war together.
Its days are numbered.
It's been around for millions of years, but it's no more than a month old. What is it?
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
What sphinxes employ and players enjoy.