Answer:
I am a king whoβs good at measuring stuff. What am I?
I am round. I have only one line. Circle is not my name indeed. What am I?
I donβt forget!
I row quickly with four oars, but never come out from under my own roof. What am I?
What always ends everything?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.