There are ten squares in each round, and each square contains two balls. There are ten pins in total. Try to knock down all the pins within two balls. If you knock down all the pins in the first ball, that is, “STRIKE”, and an “X” appears on the screen, even if you complete the first ball. If the grid is reached, the score is 10 points plus the number of downs for the next two balls.
However, if the first ball is not completely down, another ball must be played. If the remaining pins are all down, that is, “SPARE”, and “/” appears on the screen, it is considered to complete a grid, and the score is 10 points. Add the number of pins for the first ball in the next grid.
But if the second ball does not knock down all the pins, the score is the first ball plus the number of pins downed by the second ball, and then the next frame.
And so on until the tenth square. However, there are three balls in the tenth square. If the first ball or the second ball knocks down all the pins in the tenth square, a third ball can be played.
Bowling is based on innings, and the number of pins knocked down is used to score points and determine the outcome. An inning is divided into 10 rounds, with two pitches in each round. If in a round, the first throw knocks down all 10 pins, that is, all hits, you cannot throw a second time.
The only difference is in the 10th round. If the first pitch is all in, the last two balls must still be thrown; if it is a fill-up, the last ball must be continued and the overall situation is over. It is worth emphasizing that if two pitches do not knock down all 10 pins, the third chance is automatically cancelled.