Last Updated：2025/11/25
A type of chess opening, in which White plays 1.e4 (moves their king's pawn to the fourth rank with their first move) and Black breaks symmetry by replying with a move other than 1...e5.
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Semi-Open Game
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Source Word
Semi-Open Game
Noun
Japanese Meaning
チェスのオープニングの一種。白が1.e4（キングポーンの前進）を開始し、黒が1...e5以外の手で対称性を崩す戦法
（ plural ）
