Sente's turn to play This is a Yagura endgame position where Gote's King ran to 22 from 31 against Sente's checking Rook drop on 81.(For Firefox users, please forward one move from the displayed position to have the problem. Sorry, this cannot be displayed on some smartphones). Please find a nine-move-mate-line from here. You can replay the answer line by clicking the arrow directing to the right under the diagram. Also, an exclamation mark sometimes appears there on a specific move during your replay, then click it and you can read my comments on that move. After reading my comments, click the exclamation mark again then the comment window will go away to move forward again.