What are the rules of hopscotch?

The rules of the game are: at the beginning of the game, stand outside the first square, throw sandbags into the square 1, then jump into the square 1 with one foot, and then jump into the square 2 with the other foot. During this period, one foot must remain standing, and the other foot cannot touch the ground. So, according to the order of 1 ~ 10, one foot jumps alternately.

Precautions for hopscotch

Throwing sandbags outside the grid or pressing the line is a foul, and stepping on the line or crossing the line with one foot is a foul. But if you pass through side-by-side squares and "heaven" on the way, you can land. If it is a foul, the next person jumps over the house, and the next time he plays, he will continue from the last foul box.

When the sandbag loses all the squares, the man has the right to build his own house. He needs to stand at the starting point, throw the sandbag back with his back to the grid and land on that grid. That grid is his exclusive house, and his name can be written on it. Someone jumped off the house. You can't step on the house. You have to jump over.