Sente's turn to play This is a Yagura endgame position where Gote dropped a Pawn on 12 to try to ease the tension caused by Sente's edge attack(For Firefox users, please forward one move from the displayed position to have the problem. Sorry, this cannot be displayed on some smartphones). It's a tactical problem to tell you how to maximize the power of the Rook on 28 which is considered to have stayed on its original square till the endgame. In fact, there is a mate in five 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.