Chess Opening Theory/1. e4/1...e5/2. Bc4/2...Qg5

= Bishop's Opening - Sideline 2... Qg5? = 2…Qg5? does not have a variation name. It is a very suspicious move with the idea to threaten the White pawn g2.

However, involving the Black queen so early in the opening violates the most basic principles of opening strategy, such as developing before the knights and the bishops as well as castling the king to a safe place.

White must act energetically to punish the Black wrong opening conception. Thus, by playing '''3. Nf3!''', White achieves a significant advantage because the Black queen will be threatened and attacked by the White pieces. Losing precious time, Black will soon get inferior and strategically lost.

Theory table
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'''1. e4 e5 2. Bc4 Qg5?'''