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Rook on Pawn or Vertical Pawn Picker (タテ歩取り or 縦歩取り tatefudori) is a subclass of Double Wing Attack Floating Rook (Static Rook) openings in which the Floating Rook player moves his or her rook to the third file aiming to capture the opponent's pawn used to open the bishop's diagonal at the 34 square.[1][2]
This rook attack can occur preemptively by moving the rook before the opponent's pawn push and, thus, preventing (at least initially) the opponent from opening the bishop's diagonal. This option is known as Cat's Rook on Pawn (ネコの縦歩取り neko no tatefudori). Hosking calls this Floating Rook Cat Variation.[3] Or, the rook can attack the pawn after it has been pushed forward and the bishop's diagonal is already open, forcing the opponent to respond to protect that pawn. This option is called Floating Rook Hanamura Variation by Hosking.[4]