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Main lines of open and closed sicilian, including NPP

Sicilian 1 1. e4 c5
Open Sicilian 2 2. Nf3 d6
Open Sicilian 3 3. d4 cxd4
Open Sicilian 4 4. Nxd4 Nf6
Open Sicilian 5 5. Nc3
Sicilian General Concepts White Kingside initiative, better development
Sicilian General Concepts Black Queen side space, possible c rook/queen and central pawn majority (if cxd4)
Najdorf Poisoned Pawn 5 5. Nc3 a6
Najdorf Poisoned Pawn 6 6. Bg5 e6
Najdorf Poisoned Pawn 7 7. f4 Qb6
Why not 5. … e5 in Najdorf 6. Bb5+ Bd7 7. Bxd7+ Nxd7 8. Nf5 (which is hard to dislodge)
Point of 5. … a6 in Najdorf Deny white's minor pieces the d5 square while maintaining flexible development.
Typical Najdorf Plan Minority attack on the queenside and pressure on e4 pawn (with b5, Bb7, and Nc5).
Threat of 7. f4 in Najdorf Main Winning a piece with 8. e5.
NPP Accepted 8 8. Qd2 Qxb2
NPP Accepted 9 9. Rb1 Qa3
NPP Accepted 10 10. e5 (or f5)
NPP Declined 8 8. Nb3 Be7
NPP Declined 9 9. Qf3 Nbd7
NPP Declined 10 10. O-O-O Qc7
Closed Sicilian 2 2. Nc3 Nc6
Closed Sicilian 3 3. g3 g6
Closed Sicilian 4 4. Bg2 Bg7
Closed Sicilian 5 5. d3 d6
Closed Sicilian 6 6. f4 e6
Point of 5. … d6 in Closed Sicilian To allow for … e5, especially if white goes after the dark bishop with Be3 and Qd2.
Closed Sicilian Concepts White Kingside pawn storm, c3 and d4 to break open the position.
Closed Sicilian Concepts Black Queen side pawn storm, a1-h8 diagonal, f5 for blocking white.
Created by: ichabod801
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