in that box. Also, a third line, centered forward of the head pin (number-1 pin) spot is the dead wood line, which defines the maximum forward limit that any toppled pins ("wood") can occupy and still be legally playable ("live wood"). The ball used in candlepins has a maximum weight of , and has a diameter of , making it the smallest bowling ball of any North American bowling sport. The nearly identical weight of the ball, when compared to that of just one candlepin , causes balls to deflect when impacting either standing or downed pins. A game of candlepin bowling, often called a string in New England, is divided into ten rounds, each of these rounds being most commonly referred to as a box, rather than a "frame" as in tenpin bowling. In each normal box, a player is given up to three opportunities to knock down as many pins as possible. In the final box, three balls are rolled regardless of the pincount, meaning three strikes can be scored in the 10th box. One unique feature of the candlepin sport is that fallen pins, called wood, are not removed from the pin deck area between balls, unlike either the tenpin or duckpin bowling sports. The bowler, according to the rules of the sport—before delivering the second or third ball of a box—must also wait until all of the wood on the deck comes to a rest. Depending on where the fallen pins are located on the pindeck and their angle(s) after all movement of them ceases, the wood can be a major help, or obstacle—partly due to the ball having nearly the same weight as one candlepin—in trying to knock down every single standing pin for either a spare or "ten-box" score in completing a round. In each of the first nine boxes, play proceeds as follows: The first player bowls his first ball at the pins. The pins he knocks down are counted and scored. Then the player rolls a second and a third ball at any remaining targets. If all ten pins are knocked down with the first ball (a strike), the player receives ten points plus the count on the next two rolls, the pins are cleared, a new set placed. If all ten pins are knocked down with two balls (a spare), the player receives 10 points plus the count of the next