The candlepins themselves are tall, have a cylindrical shape which tapers equally towards each end (and therefore having no distinct "top" or "bottom" end, unlike a tenpin), giving them an overall appearance somewhat like that of a candle, and have a maximum weight of apiece. Candlepin bowling uses the same numbering system and shape for the formation within the ten candlepins are set, as the tenpin sport does. Also, as in tenpin bowling, due to the spacing of the pins (, center to center), it is impossible for the ball to strike every one. However, while in tenpin a well-placed ball (usually between the head pin and the 2 or 3 pin) may knock down all ten pins (a "strike" if on the first ball in a frame) from the chain reaction of pin hitting pin, in candlepins the smaller thickness of the pins makes throwing a strike extremely difficult. In order to count, the pin must be knocked over entirely; in unlucky circumstances, a pin may wobble furiously, or, even more frustratingly, be "kicked" to the side by several inches, yet come to rest upright, thus not being scored (and not be reset to its original position for any throws that remain, though it may of course still be knocked over by subsequent balls). It is even possible for a toppled pin to bounce off a side "kickback", and return to a standing position on the lane's pin deck in the candlepin sport. However, in the event that a fallen pin returns to a standing position, the pin is still counted as fallen and is played as live wood.