Ruy Lopez Breyer
Black's complete repertoire in the Ruy Lopez Breyer (9...Nb8). Ten drills cover the main 14.Ng3 g6 with both ...c5 and ...Bg7 plans, the closed 14.d5 c6, Karpov's 12.a4, Kasparov's 14.Nh2 attacking scheme, the rare 11.Nh4, slow 10.a3 and 10.d3, the double-fianchetto 12.b3, and the early 10.Bg5 pin.
The Breyer (9...Nb8!) is the deepest, most resilient Black answer to the Closed Ruy Lopez — Spassky, Karpov, Kasparov, and Carlsen have all trusted it at the top level. The seemingly paradoxical knight retreat clears b8 for ...Nbd7 and prepares a powerful regrouping with ...Bb7, ...Re8, ...Bf8, and the king's fianchetto. This pack drills every modern White try: the classical main lines with ...g6 / ...c5 and ...Bg7, the closed 14.d5 c6, Karpov's 12.a4 sharpener, Kasparov's Nh2-Qf3-Ng4 attack, the rare 11.Nh4, restrained 10.a3 and 10.d3 setups, the double-fianchetto 12.b3, and the early 10.Bg5 pin. Forty exam positions sharpen the critical regrouping choices so you reach a flexible, resourceful middlegame as Black.