投稿された要塞を私が出題する要塞と戦わせて好成績を残せば強要塞リストに登録されます。
You will fight against fortresses which I selected. If you win with good grades, your fortress will be registered in the list of strong fortresses.
出題要塞数:20 (Number of selected fortress is 20)
合格勝率:80%(winning percentage to pass is 80%)
