In shogi, Akutsu Rapid Attack Yagura (阿久津流急戦矢倉 akutsu-ryū kyūsen yagura) is a Double Yagura (Static Rook) opening.
Shogi, also known as Japanese chess or the Game of Generals, is a two-player strategy board game native to Japan in the same family as chess, makruk, shatranj, janggi and xiangqi, and is the most popular chess variant in Japan. Shōgi means general's board game.
A shogi opening is the sequence of initial moves of a shogi game before the middle game. The more general Japanese term for the beginning of the game is 序盤 joban.
This style of Yagura was named after professional player Chikara Akutsu who has used this strategy with good results.
Chikara Akutsu is a Japanese professional shogi player, ranked 8-dan.
Akutsu Rapid Attack Yagura is typically used by White. It is characterized by White keeping their bishop diagonal open so that the central file pawns may be exchanged.
Following the pawn exchange on the fifth file with the bishop, the goal of White is to build a good position with their right silver advanced to the 54 square, so as to later start the fight on the sixth file with a pawn push (☖P-65). The bishop on the 55 square can be pulled back on White's right side to the 73 square or returned its starting square on 22. Depending on Black's response, the goal mentioned above is often rejected and there's a shift to a slow game.
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In shogi, Spearing the Sparrow is one of the substrategies of the Yagura class of openings. The strategy is basically an edge attack on the first file if played by Black or the ninth file if played by White. The player's rook characteristically moves to the respective edge file to support an attack there along with the right knight, the edge pawn, the right lance, and the bishop.
In shogi, Waki System is a symmetrical Double Yagura opening.
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