"semi-open game"的定义和意义

What is a "semi-open game"?

In chess, a semi-open game occurs when one player opens the game with 1.e4, which is pawn to e4, and the other responds with a move other than 1...e5, such as 1...c5, which is the Sicilian Defense, or 1...e6, which is the French Defense. This creates an asymmetrical position where one player's central pawn is more advanced than the other's. Semi-open games are often rich in tactical opportunities and offer both players chances for counterplay. They are typically more dynamic and complex than open games, as both sides must carefully maneuver their pieces to maintain a strong position.