Fischer-Sozin 6.Bc4 is variation 4 of 5 in the Sicilian Najdorf course, a advanced opening course for Black (ECO B87). It runs 22 moves and begins 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 …. White aims the bishop at e6 and f7, ready for sacrifices there. Black answers with ...e6 and ...b5 to kick the bishop, castles, and meets Qf3-g3 and Bh6 with the calm ...Ne8. In the lesson every move is explained on a board and then drilled; it is free.
Move by move
1. e4 – Takes the centre.
1... c5 – The Sicilian.
2. Nf3 – Develops and prepares d4.
2... d6 – Controls e5.
3. d4 – Opens the centre.
3... cxd4 – Wins a centre pawn for a wing pawn.
4. Nxd4 – Recaptures.
4... Nf6 – Attacks e4.
5. Nc3 – Defends e4.
5... a6 – The Najdorf: covers b5 and prepares ...b5 to hit a bishop on c4.
6. Bc4 – Fischer's favourite: the bishop aims at e6 and f7, ready for sacrifices there.
6... e6 – Blocks the bishop's diagonal and prepares ...b5 to chase it.
7. Bb3 – The bishop steps back before ...b5 or ...d5 can hit it, and stays on the a2-g8 diagonal.
7... b5 – Gains queenside space and prepares ...Bb7 to hit e4, or ...b4 to kick the c3 knight.
8. O-O – White castles and prepares Qf3 or f4.
8... Be7 – Develops and prepares to castle.
The lesson goes on for 6 more moves, each with its explanation.
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