But it reminds one of the story of Zhu Yuan-chang's chessboard: If you put one kernel of rice on the first square, two on the second, four on the third, and keeping doubling the number each square, there would be an astronomical number of kernels required for one position even before the 64th square is reached.
這個方式乍聽不稀奇，但就像傳說中「朱元璋的棋盤」，第一格放一粒米，第二格兩粒，第三格四粒… …，不要多，只要一個拉一個，呈等比級數倍增下去，六十四格還沒放滿，就已是億萬的天文數字！