Ten-pin bowling back row, then three, then two, and finally one in the front at the center of the lane. To ease communication, pins are numbered one through ten, starting with "head pin" in front, and ending with ten in the back to the right. Because of the spacing of the pins and the size of the ball (about in diameter), it is impossible for the ball to contact all pins. Therefore, a tactical shot is required, which would result in a chain reaction of pin hitting pin in a process called "pin scatter". In an ideal shot for a right-hander, the
Ten-pin bowling scores decline, often because they did not change their technique or bowling balls appropriately. Some argue that such high technology unfairly affects competition, making high scores too dependent on how much money one spends on equipment. The USBC, for various reasons, has struggled to regulate these changes well enough to protect the integrity of their honor score award program. The problem mostly stemmed from the feature of modern oil patterns, especially house patterns that help exhibit performance of modern bowling balls allegedly for marketing reasons. Every such pattern provides better odds to bowlers with certain line of bowling, release, ball