9個○中,填入1~9,9個數字,數字不重複,使運算成立。
圖片參考:https://s.yimg.com/lo/api/res/1.2/l0T116gRL0atLOgnEyQ5AQ--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/http://gameschool.cc/ugc/img/content/d4/1d/2585.png
圖片參考:https://s.yimg.com/lo/api/res/1.2/d_qcr.meO7j_pjawlaAs_w--/YXBwaWQ9dHdhbnN3ZXJzO3E9ODU-/http://gameschool.cc/ugc/img/content/d4/1d/2586.png