The Classical Sicilian (5...Nc6) with Scheveningen set-ups (...e6, ...Be7, ...a6): flexible, solid and full of counterplay on the c-file. This is a advanced opening course for Black (ECO B56), written for players rated around 1800. Each move is explained and then drilled on a board; it is free.
Key ideas of Sicilian Classical & Scheveningen
...Nc6 develops and keeps an eye on d4 and e5; ...e6 or ...e5 follows depending on White's set-up.
Against the Richter-Rauzer (Bg5) play ...e6, ...a6 and ...Bd7, then castle or strike with ...b5.
Against quiet Be2 lines, ...e5 gains space and kicks the d4 knight.
The half-open c-file is Black's highway: rooks on c8, pressure on c3 and c2.
The line trainer
The line trainer for Sicilian Classical & Scheveningen has 50 lines that grow out of 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6, learned a few new ones a day with spaced-repetition review.
chessGM