Chess Opening Theory/1. e4/1...e5/2. Bc4/2...g6

= Bishop's Opening - Sideline 2... g6? = The opening line '''1. e4 e5 2. Bc4 g6''' is a deviation from standard opening principles in chess. The move 2…g6? is considered weak because it allows White to seize control of the center with 3. d4 quickly. This move attacks the pawn on e5 and prepares to develop the knight to f3.

After '''3. d4!,''' White plans to continue with 4. Nf3, aiming to put more pressure on the central square e5. Black cannot respond with 4... Bg7?? because 5. Nxe5 Bxe5 6. dxe5 would lead to White winning a pawn due to the pin on the e5 pawn.

White could also consider a long-term plan of advancing the pawn on a2 to a5 (via a4) to control the b6 square. This move could potentially limit Black's queenside development and create weaknesses in Black's pawn structure.

Overall, this sideline in the Bishop's Opening leads to a superior position for White due to Black's neglect of central control and weak pawn structure.

Theory table
. '''1. e4 e5 2. Bc4 g6?'''