ECO B93 · Sicilian Defense
Sicilian Defense: Najdorf Variation, Amsterdam Variation
The position after 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4.
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4
Sicilian Defense: Najdorf Variation, Amsterdam Variation is filed under ECO B93, a variation of Sicilian Defense: Najdorf Variation. It is the position after 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 — 11 half-moves in, with Black to move. Named theory ends here; beyond this the position is yours to work out.