Its success lay in the simple yet effective idea of forming a solid pawn structure with pawns on d4 and e3, followed by a restrained piece development that aimed to control the central squares while maintaining flexibility.
The system gained recognition and popularity during the 1920s and 1930s, becoming a staple in the repertoire of many strong players. Its success lay in the simple yet effective idea of forming a solid pawn structure with pawns on d4 and e3, followed by a restrained piece development that aimed to control the central squares while maintaining flexibility.