Xiao Ming divides 100 chess pieces into three piles. It is known that the first pile is twice as large as the second pile, and the second pile is twice as large as the third pile. May I ask: How many chess pieces are there at most in the third pile?
小明将100枚棋子分成三堆，已知第一堆比第二堆的2倍还多，第二堆比第三堆的2倍也要多．请问：第三堆最多有多少枚棋子？
<result>13</result>