【Question 10】
Place one black and one white Go stone on the grid points of the square in the figure, but the two stones cannot be on the same line. There are $\qquad$ different ways to do this. (Rotations that result in the same position are considered the same)
【Analysis and Solution】
Counting.
(1) As shown in Figure 1, when the black stone is placed at the corner, there are 4 different ways to place the white stone; (2) As shown in Figure 2, when the black stone is placed on the edge, there are 4 different ways to place the white stone; (3) As shown in Figure 3, when the black stone is placed at the center, there is 1 way to place the white stone; In summary, there are $4+4+1=9$ different ways to place the stones.