Ruy Lopez for Black – Jospem’s Repertoire against the Sidelines + PGN October 19, 2025

For decades, 1.e4 e5 players prepared their Marshall, their Berlin, their Open Spanish—only to face 5.d3 on move five. What was once dismissed as a “safe” sideline has quietly become White’s second most popular choice, appearing nearly as often as 5.O-O in elite practice. The landscape has shifted: you can no longer afford to treat these deviations as afterthoughts. Ruy Lopez for Black – Jospem’s Repertoire against the Sidelines addresses this modern reality head-on, offering a unified solution to every sideline White throws at you before castling kingside.