Yes Larry. That's pretty much the main idea. Keep your wickets intact, and score runs by hitting the ball away from fielders long enough to make it to the other end of the 20yd pitch before the ball is returned.
If the ball makes the "boundary" of the field on the ground you get 4 runs, no need to run. On the full, 6 runs.
See above. A cricketer might run umpteen singles of 20yds, or twos or threes. But boundaries is the idea.
That's when the bowler knows he fugged up.
My dad
@cus_deluxe has been to high level cricket while he was in Australia, perhaps he can explain some of this in Murican a bit better.
Or we can let it die.