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A flank opening is a chess opening played by White and typified by play on one or both flanks (the portion of the chess board outside the central d and e files). White plays in hypermodern style, attacking the center from the flanks with pieces rather than occupying it with pawns. These openings are played often, and 1.Nf3 and 1.c4 trail only 1.e4 and 1.d4 in popularity as opening moves. * 1.Nf3 Zukertort Opening – characteristically followed by fianchettoing one or both bishops, and without an early d4 * 1.c4 English Opening * 1.g3 Benko Opening * 1.Nc3 Dunst Opening * 1.f4 Bird's Opening * 1.b3 Larsen's Opening * 1.b4 Sokolsky Opening * 1.g4 Grob's Attack ==1.Nf3== If White opens with 1.Nf3, the game often becomes one of the d4 openings (closed games or semi-closed games) by a different move order (this is called ''transposition''), but unique openings such as the Réti and King's Indian Attack are also common. The Réti itself is characterized by White playing 1.Nf3, fianchettoing one or both bishops, and not playing an early d4 (which would generally transpose into one of the 1.d4 openings). The King's Indian Attack (KIA) is a system of development that White may use in reply to almost any Black opening moves. The characteristic KIA setup is 1.Nf3, 2.g3, 3.Bg2, 4.0-0, 5.d3, 6.Nbd2, and 7.e4, although these moves may be played in many different orders. In fact, the KIA is probably most often reached after 1.e4 when White uses it to respond to a Black attempt to play one of the semi-open games such as the Caro-Kann, French, or Sicilian, or even the open games which usually come after 1.e4 e5. Its greatest appeal may be that by adopting a set pattern of development, White can avoid the large amount of opening study required to prepare to meet the many different possible Black replies to 1.e4. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「flank opening」の詳細全文を読む スポンサード リンク
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