Ruy Lopez Open Defense
Black's most ambitious answer to the Ruy Lopez — grab the e4 pawn with 5...Nxe4 and play for active piece counter-play. Ten drills cover the Karpov 11.Bc2, Classical 9.c3 Be7, the razor-sharp Dilworth 9.c3 Bc5, plus 9.Be3, 9.Qe2 Howell, 9.Nc3 Mikenas, 9.Bg5, 9.a4 and 9.h3.
The Open Defense is the Spanish for Black players who refuse to defend passively — sacrifice the centre's pawn structure for unrelenting piece activity, the bishop pair and the sharpest tactics in 1.e4 e5. This pack drills the modern Karpov 11.Bc2 main line, the classical 9.c3 Be7 setup, the legendary Dilworth Attack 9.c3 Bc5!? exchange sacrifice, and every White anti-Open: 9.Be3, 9.Qe2 Howell, 9.Nc3 Mikenas pawn-doubling, 9.Bg5 pin, 9.a4 queenside probe and the slow 9.h3. Forty exam positions hammer in the critical decisions — Bg4 vs Be7, d4 vs Nc5, Nxc3 vs Nxd4 — so you'll answer every White move-order with prepared, principled theory.