ECO code: A00
Van't Kruijs Opening e5 2.Bc4 b5
This opening arises after the moves 1. e3 e5 2. Bc4 b5. It is a rare and somewhat offbeat line where Black immediately challenges White's bishop on c4 by pushing the pawn to b5.
Characteristic: The move 2...b5 is an aggressive pawn thrust aiming to gain space on the queenside and dislodge White's active bishop early. It is somewhat unusual because Black focuses on a flank pawn push rather than immediate central control or development.
Playing Style: For Black, this move is attacking in nature, trying to disrupt White's piece placement and seize the initiative on the queenside. White's setup with 2.Bc4 is also somewhat aggressive, placing the bishop on a strong diagonal, but White will need to decide how to respond to Black's pawn push.
Center Control: Neither side directly contests the center at this stage. White's 1.e3 and Black's 1...e5 stake some central presence, but Black's 2...b5 is more about flank activity than challenging the center immediately. This opening does not focus on early central confrontation.
This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.