Sicilian Richter-Rauzer
Black's mainline answer to 6.Bg5 in the Open Sicilian — develop with ...e6 + ...a6 + ...Be7, castle queenside-versus-kingside, and race to attack. Ten drills cover the 9.Be3 main, 9.Bf4 kick, 9.Be3 Be7 slow, Bondarevsky 7...Be7, Smyslov 6...Bd7, 8.f4 early, modern 9...b5 and more.
The Richter-Rauzer is the most principled answer to White's 6.Bg5 in the Open Sicilian — Black accepts opposite-side castling and races down the c-file with ...Qa5 + ...Rfc8. This pack drills the classical 9.Be3 main with ...Nxd4 ...b5 ...Qa5, the Larsen ...Qa5 + ...e5 plan, the 9.Bf4 ...e5 kick, the 9.Be3 ...Be7 slow setup, the Bondarevsky 7...Be7, the Smyslov 6...Bd7 with ...e5 + ...g5 counter-attack, the early 8.f4 sideline, the modern 9...b5 queenside rush, the 10.Bxd4 recapture and the 9.Bf4 ...Bd7 quiet line. Forty exam positions train the critical decisions — Nxd4 vs ...b5, Qa5 vs Be7, dxe5 vs ...Bd7 — so you'll answer every White move-order with confident, prepared theory.