1st to 9... you start in the square of the servers choice. server from the box onto the wall and it must hit higher than the middle line, but lower than the top line and must not bounce on the floor until it is past the line on the floor! then you must win the serve before you win a point... i.e. you must be serving to win points! then you swap squares each serve and each person has their own sequence, if you know what you mean, so if you serve from the right and win you must move to the left, then they win its their choice to serve, or the opposite square to where they last served from (let me know if you are confused...) i normally play however many games i can fit into the 40min slot, it can be as low as 2 sometimes if you keep getting rallies going