商品情報 定跡次の一手 令和の三間飛車対急戦（将棋世界2019年9月号付録）
It covers tactics for normal third file v boat rapid attacks, elmo, and left mino.
Note: This position is the cover of the book.
For each position denoted "Problem" (1-39) I would recommend opening the menu on the right panel to hide the moves and the answer. Unhide the moves when you come up with an answer.
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