Ten-pin bowling regulations, identification letters and numbers, and general wear from normal use. For much of the history of bowling, bowling balls were made using a three-piece construction method. Starting in the mid-1990s, however, most manufacturers switched to a two-piece method. In response to these innovative ball designs, the American Bowling Congress placed further restrictions on the technical characteristics of the ball such as the radius of gyration and hooking potential. A game of bowling consists of ten frames. In each frame, the bowler will have two chances to knock down as many pins as possible with their bowling ball. In games
Nine-pin bowling Nine-pin bowling Nine-pin bowling (also known as ninepin bowling, nine-pins, 9-pins, kegel, etc.) is a bowling game played primarily in Europe. European championships are held each year. Over 90,000 members are on teams in Germany, often playing in officially registered "Bundeskegelbahnen" (association bowling alleys) to be found in almost every sizable town. In Europe overall, there are some 130,000 players. Nine-pin bowling lanes are often found in Austria, Belgium, Germany, Luxembourg, the Netherlands, Estonia, Switzerland, Serbia, Slovenia, Croatia, Poland, Macedonia, Hungary, Brazil and Liechtenstein. The English-speaking countries, having a predominance of facilities for the modern ten-pin sport which originated in