The repertoire is designed to handle nearly everything an opponent can play:
It is highly recommended for club players (roughly up to 1500–1600 ELO) who are "time-poor" and want to avoid the "theory arms race". Specific Opening Systems Side Stepping Mainline Theory Gerard Welling ...
by Gerard Welling and Steve Giddins offers a practical, "anti-theory" repertoire for club players. The book argues that amateurs often waste time memorizing complex, grandmaster-level openings that rarely decide their games. Instead, it provides a compact system designed to get players into familiar middlegames quickly, allowing them to focus on tactics, positional understanding, and endgames. Core Repertoire Philosophy The repertoire is designed to handle nearly everything