What are the rules for nine ball pool?

First Answer:
There are no special rules. If 9 pins drop it is considered a strike.

Second Answer:
When you throw your first ball and 9 pins fall, it will be automatically considered a strike.

Third Answer:

In No-Tap Bowling, the bowler is given a strike for knocking down 9 pins on the first ball and does not bowl a second spare ball. This tends to even out the playing field somewhat between middle average and high average bowlers, also speeds up the game.

Fourth Answer:
No-tap is a type of game where a player gets credited with a strike if they knock down 9 pins on the first ball. The term 'tap' in bowling means the bowler threw a good ball on the first ball but left one pin standing. It doesn't make any difference, in no-tap, whether the first ball was a good one or not. As long as at least nine pins are knocked down, the bowler is credited with a strike.

Fifth Answer:

Ninepin No-Tap is a variation of tenpin bowling. The general rules are the same as they are for tenpin bowling. If a bowler knocks down nine pins on their first shot, it is scored as a strike. The pins are then reset and you move on to the next bowler/next frame. The bowler does not have to shoot a second shot. Knocking down all ten pins still counts as a strike also.