Good Riddles

Question: Eight of us go fourth, not back, to protect our king from an attack. What are we?

Question: It dies when it's hot, exists when it's cold, you can touch it, but you cannot bounce it, and it doesn't give you any gold. What am I?

Question: What do you call bodyguards in front of a Samsung store

Question: What walks but doesn't have legs?

Question: I am somewhere but nowhere. What am I?