Double Wing Attack

In shogi, Double Wing Attack or simply Wing Attack or Centre Game (Japanese: 相掛かり or 相懸り, romanized: aigakari, lit. 'Mutual attack') is a Double Static Rook opening in which both sides directly advance their rook pawns forward on the second and eighth files toward their opponent's bishop often with the first several moves on each side being identical or very similar.

Double Wing Attack, which has been played since the Edo period, has been known as a strategy prone to fierce battles due to the lack of a well-developed joseki. However, with the development of computer shogi in the late 2010s including programs such as AlphaZero adopting Double Attack, there has been further progress in the josekis for this opening, which has led to its adoption in most professional title games in 2021 highlighting its importance.