Sicilian O'Kelly
Black's complete intermediate repertoire in the Sicilian O'Kelly (1.e4 c5 2.Nf3 a6) — the move-order that punishes the automatic 3.d4 and steers other tries into favourable Paulsen / Hedgehog waters. Seven drills cover the 3.c3 Alapin met by ...d5, the 3.c4 Maróczy with ...Bb4/...d5, the 3.d4 punish with 5...e5, the 3.Nc3 Paulsen transposition, the 3.Bc4 Italian-style, the 3.g3 KIA, and the 3.c3 Nf6 Alapin Advance.
The Sicilian O'Kelly (1.e4 c5 2.Nf3 a6) is the cunning move-order Sicilian — Black plays the prophylactic ...a6 first, punishing 3.d4 with ...e5 (no Nb5 jump because of ...a6) and steering every other White try into favourable Paulsen and Hedgehog structures. This pack drills the seven critical White answers with a complete, intermediate-level reply for each: 3.c3 Alapin met by ...d5/Qxd5, 3.c4 Maróczy cracked by ...Bb4/...d5, 3.d4 punished by 5...e5 with the Sveshnikov-like centre, 3.Nc3 transposed to a Paulsen with ...Bb4/...e5, 3.Bc4 met by the ...e6/...b5 Hedgehog, 3.g3 mirrored by ...g6/...Bg7, and 3.c3 Nf6 4.e5 traded into a healthy bishop-pair ending. Thirty exam positions sharpen the key decisions — when to play ...e5, when to break with ...d5, the Hedgehog regroupings and the bishop trades — so every White 3rd move has a prepared, principled Black answer.