This study is a series of interactive tsume positions for intermediate/dan players. Practicing Tsumeshogi is a good way to improve your endgame skill. However, tsumeshogi does not usually include trading and capturing pieces since they have not been considered "beautiful as a tsume" by tsume composers. In real games, trading and capturing pieces often occurs during a long mating line. This Study provides you an opportunity to practice tsume positions based on real games which may need trading and/or capturing pieces during the mate. I'm picking up tsume positions to gradually increase the number of puzzles in this Study.