下図1),2)に示すように、ひとつの石をクリックすれば、関連のある石が選択されます。
下図3),4)に示すように、双方の陣地が石で仕切られないと正しく計算されません。
When a stone is clicked, other stones which have relationship with it are
selected as shown by 1) and 2) in the figure below. When white and black
spaces are not separated, the results cannot be calculated correctly
as shown by 3) and 4) in the figure below.