Billiard way (3 cushion system / Five & half system / Plus system) It was implemented through the five and half system and the plus system, which are representative of the system. You can easily understand the five and half system and the plus system of billiards through free placement exercises and games. The difficult-to-understand five-and-half system course provides an intuitive understanding of the system. The game in billiards is the last bank shot It often ends. So, in order to increase