Play Black · 20 chapters

Sicilian Defense: Najdorf and Anti-Sicilians

A Sicilian repertoire based on the Najdorf, with responses to the Alapin, Morra, Moscow, Closed Sicilian and Grand Prix.

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Idea and repertoire boundaries

After 1.e4 c5 Black creates asymmetry. In the Open Sicilian this course chooses the Najdorf: ...d6, ...Nf6 and ...a6. It is not an encyclopaedia of the Dragon, Sveshnikov and Taimanov simultaneously. Anti-Sicilian chapters are integral because White need not play Nf3 and d4. Lines reach tabiyas with plans; the sharpest are not a promise of easy play or an up-to-date exhaustive engine file.

White’s plan

After Nxd4 White has rapid development and a choice of castling side. Bg5, Be3, Bc4, Be2, f4, g3 and h3 imply different plans. The English Attack combines Be3/f3/Qd2 with g/h advances, the Sozin targets e6/f7 and a fianchetto controls d5. There is no single anti-Najdorf attack that can always be met with identical moves.

Black’s plan

Black uses the half-open c-file and a central-pawn majority. ...a6 secures b5 but does not itself develop a piece. Choosing ...e5 or ...e6 determines weaknesses: e5 concedes d5 while e6 may attract sacrifices. ...b5/Bb7 and ...Rc8 create activity, but king safety outranks a b2 hunt. Anti-Sicilians often open the centre very differently.

Structures and pawn breaks

After ...e5 a knight on d5 may become a lasting problem; preserve the defenders. The e6-d6 setup is flexible but can be restricted by e5. The Moscow with c4 can create a Maróczy Bind, while the Alapin may leave an isolated d4-pawn. In the Morra material trades for development. Each structure needs a different timing of ...d5, not one memorised sequence.

Move order and tactics

Always check Nxe6/Bxe6, Qh5 attacks and f7 weaknesses. With opposite castling time often matters more than a pawn, but that does not justify an uncalculated sacrifice. In the Poisoned Pawn ...Qxb2 gains material while taking the queen away from defence. In the Alapin ...Qxd5 is possible because c3 blocks Nc3 with tempo. The motifs depend on actual squares.

Transition to the middlegame and endgame

At the end of the opening find a plan for Bc8 and Nb8 and assess whether ...d5 truly frees the position. After a queen trade, c-file activity and control of d5/d6 often outweigh the old pawn race. If d6 is weak, keep active pieces; passively defending several weaknesses quickly destroys the Sicilian’s dynamic compensation.

How to train this course

Start with quiet Be2 and the English Attack, then Bg5 and the Sozin. Study the Moscow and Alapin alongside them because they occur before a Najdorf can arise. Choose one Morra response: accept it or transpose to the Alapin. The Poisoned Pawn is advanced material. After the tabiya compare both attacks’ tempi and identify the file your next break will open.

Annotated variations

SAN: N — knight, B — bishop, R — rook, Q — queen, K — king.

1. Najdorf — Bg5 and classical ...Be7

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. g4 b5 11. Bxf6 Nxf6 12. g5 Nd7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
5... a6
...a6 controls b5 and prepares counterplay. Against Bg5, Black chooses ...e6: immediate ...e5 would weaken d5 with tactical pressure on Nf6.
12... Nd7
After g5 Nd7 Black needs ...Bb7 and queenside play quickly. White attacks the king; calculate e6/d5 exchanges before automatically pushing ...b4.
FENr1b1k2r/2qnbppp/p2pp3/1p4P1/3NPP2/2N2Q2/PPP4P/2KR1B1R w kq - 1 13

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2. Najdorf — the Poisoned b2-Pawn

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Qb6 8. Qd2 Qxb2 9. Rb1 Qa3 10. e5 dxe5 11. fxe5 Nfd7 12. Ne4

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
7... Qb6
...Qb6 attacks b2; after Qd2 and ...Qxb2 Black buys a pawn with tempi. This is a separate sharp option, not default beginner advice.
12. Ne4
Ne4 increases White’s initiative. Black’s queen is far from Ke8, so check forcing moves, e6 and Nd6 before any further capture. There is no universal defensive setup here.
FENrnb1kb1r/1p1n1ppp/p3p3/4P1B1/3NN3/q7/P1PQ2PP/1R2KB1R b Kkq - 2 12

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3. English Attack — ...e5 and Nb3

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e5 7. Nb3 Be6 8. f3 Be7 9. Qd2 O-O 10. O-O-O Nbd7 11. g4 b5 12. h4 Nb6

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6... e5
...e5 gains space with tempo on Nd4 but concedes d5. ...Be6 develops while controlling that square.
12... Nb6
...Nb6 targets c4 and supports ...b4. White attacks with g4-h4 while Black uses a/b pawns; ...d5 needs tactical justification, not routine execution.
FENr2q1rk1/4bppp/pn1pbn2/1p2p3/4P1PP/1NN1BP2/PPPQ4/2KR1B1R w - - 1 13

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4. English Attack — Scheveningen-style ...e6

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 8. Qd2 Nbd7 9. g4 h6 10. O-O-O Bb7 11. h4 b4 12. Na4 Qa5

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6... e6
...e6 preserves d5 control instead of conceding it with ...e5. ...h6 can restrain g5 but gives h4-h5 a target.
12... Qa5
...Qa5 increases pressure on a4 and a2. Before taking a knight or pawn, check Nxe6 sacrifices and the h-file: both kings may be vulnerable.
FENr3kb1r/1b1n1pp1/p2ppn1p/q7/Np1NP1PP/4BP2/PPPQ4/2KR1B1R w kq - 2 13

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5. Classical Be2 — ...e5 and d5 pressure

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5 7. Nb3 Be7 8. O-O O-O 9. Be3 Be6 10. f4 exf4 11. Rxf4 Nc6

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6. Be2
Be2 chooses quiet development. ...e5 forces Nd4 to retreat and ...Be6 helps control the weakened d5-square.
11... Nc6
Rxf4 activates White’s rook, but Black can develop ...Rc8 and ...Ne5. Do not exchange both d5-defenders at once or a white knight may become a permanent blockader.
FENr2q1rk1/1p2bppp/p1npbn2/8/4PR2/1NN1B3/PPP1B1PP/R2Q2K1 w - - 1 12

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6. Sozin — Bc4 and pressure on e6

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6 7. Bb3 b5 8. O-O Be7 9. f4 O-O 10. e5 dxe5 11. fxe5 Nfd7 12. Qh5

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6. Bc4
Bc4 immediately targets f7/e6. ...e6 closes the diagonal but can become a target for Nxe6 or Bxe6 sacrifices.
12. Qh5
After Qh5 White threatens the king. Rather than automatically pushing ...b4, assess ...g6, ...Nc5 and threats to h7/f7; each defence changes weak squares.
FENrnbq1rk1/3nbppp/p3p3/1p2P2Q/3N4/1BN5/PPP3PP/R1B2RK1 b - - 2 12

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7. Najdorf — early 6.f4

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Qc7 8. Bd3 Be7 9. O-O O-O 10. Qe1 b5 11. Kh1 Bb7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6. f4
f4 strengthens pressure on e5, but Black can play ...e5 with tempo on Nd4. Nf3 leaves Nc3 exposed to a later ...b4.
11... Bb7
...Bb7 develops towards the centre. White plans Qg3 or fxe5; Black needs ...Nbd7 and c-file coordination rather than leaving the rooks in the corners.
FENrn3rk1/1bq1bppp/p2p1n2/1p2p3/4PP2/2NB1N2/PPP3PP/R1B1QR1K w - - 2 12

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8. Najdorf — the 6.g3 fianchetto

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5 7. Nde2 b5 8. Bg2 Bb7 9. O-O Nbd7 10. h3 Be7 11. g4 h6

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6. g3
g3 develops the bishop to control d5. ...e5 is possible, but Black must track Nc3-d5 and potential g4-g5.
11... h6
...h6 restrains g5 but does not finish king defence. Choose castling or a deliberate king plan; with a closed centre White may manoeuvre via Ng3/f5.
FENr2qk2r/1b1nbpp1/p2p1n1p/1p2p3/4P1P1/2N4P/PPP1NPB1/R1BQ1RK1 w kq - 0 12

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9. Najdorf — 6.h3 and ...h5

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5 7. Nde2 h5 8. g3 b5 9. Bg2 Bb7 10. O-O Nbd7 11. a3 Rc8

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
7... h5
...h5 restrains the g4 plan in this particular setup. It weakens g5, so account for Nc3 before using it.
11... Rc8
...Rc8 activates a rook on the c-file. Watch Nd5 and exchanges of Bb7; without d5 control the e5-d6 chain may become passive.
FEN2rqkb1r/1b1n1pp1/p2p1n2/1p2p2p/4P3/P1N3PP/1PP1NPB1/R1BQ1RK1 w k - 1 12

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10. Najdorf — 6.h3 with ...e6

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e6 7. g4 h6 8. Bg2 Nc6 9. Be3 Be7 10. O-O Qc7 11. Qd2 Bd7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6... e6
...e6 preserves d5 and ...h6 asks whether White wants immediate g5. This leads to a different battle from 6...e5.
11... Bd7
Black completes Bc8 development and can consider either castling direction according to the threats. Do not choose king safety solely from the name Najdorf.
FENr3k2r/1pqbbpp1/p1nppn1p/8/3NP1P1/2N1B2P/PPPQ1PB1/R4RK1 w kq - 8 12

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11. Najdorf — prophylactic 6.a4

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. a4 e5 7. Nb3 Be7 8. Be2 O-O 9. O-O Be6 10. Be3 Nbd7 11. Qd2 Qc7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
6. a4
a4 restrains ...b5 but does not improve development or the centre. ...e5 with tempo allows Black calm mobilisation.
11... Qc7
...Qc7 supports ...Rac8 and c2 pressure. Instead of forcing ...b5 against a4, improve the pieces and control d5; White may build f4 pressure.
FENr4rk1/1pqnbppp/p2pbn2/4p3/P3P3/1NN1B3/1PPQBPPP/R4RK1 w - - 10 12

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12. Moscow — 3.Bb5+ Bd7

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nf6 6. Nc3 g6 7. d4 cxd4 8. Nxd4 Bg7 9. O-O Nc6

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
3... Bd7
...Bd7 offers a bishop exchange and keeps a healthy structure. c4 creates a Maróczy Bind, so do not expect the same ...b5 as in the Najdorf.
9... Nc6
Black needs active exchanges and well-timed ...b5 or ...d5. White’s space is not an immediate attack; patiently defend d5/b5.
FENr3k2r/pp1qppbp/2np1np1/8/2PNP3/2N5/PP3PPP/R1BQ1RK1 w kq - 3 10

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13. Moscow — 3...Nd7

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 a6 6. Bxd7+ Bxd7 7. O-O Nf6 8. c4 g6 9. Nc3 Bg7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
3... Nd7
...Nd7 blocks with a piece and preserves Bc8. Later ...a6 asks Bb5 to decide and may secure the bishop pair.
9... Bg7
The fianchetto increases pressure on d4. White has c4-e4 space and Black the bishop pair: exchange blockading knights, not active Bg7 without a reason.
FENr2qk2r/1p1bppbp/p2p1np1/8/2PQP3/2N2N2/PP3PPP/R1B2RK1 w kq - 2 10

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14. Alapin — 2...Nf6 and the attack on e4

1. e4 c5 2. c3 Nf6 3. e5 Nd5 4. d4 cxd4 5. Nf3 Nc6 6. cxd4 d6 7. exd6 Qxd6 8. Nc3 Nxc3 9. bxc3 g6

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
2... Nf6
...Nf6 attacks e4 before White plays d4. After e5 the knight occupies d5 and Black undermines the centre with ...d6.
9... g6
After bxc3 Black plans ...Bg7 and ...O-O to pressure d4. White has an active centre and b-file; avoid too many Qd6 moves.
FENr1b1kb1r/pp2pp1p/2nq2p1/8/3P4/2P2N2/P4PPP/R1BQKB1R w KQkq - 0 10

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15. Alapin — immediate 2...d5

1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nf6 5. Nf3 Bg4 6. Be2 e6 7. O-O Nc6 8. Be3 cxd4 9. cxd4 Be7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
2... d5
...d5 disrupts the intended quiet d4-e4 centre. The queen can centralise because c3 blocks a natural Nc3 with tempo.
9... Be7
After ...cxd4 cxd4 White has an isolated pawn. Castle, blockade d4 and watch d5 opportunities. The ...Bg4 pin is not a substitute for king defence.
FENr3k2r/pp2bppp/2n1pn2/3q4/3P2b1/4BN2/PP2BPPP/RN1Q1RK1 w kq - 1 10

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16. Morra accepted — development instead of greed

1. e4 c5 2. d4 cxd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bc4 e6 7. O-O Nf6 8. Qe2 Be7 9. Rd1 O-O

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
3... dxc3
...dxc3 accepts the gambit. Black has an extra pawn, but White develops quickly and uses the d-file.
9... O-O
After ...O-O, d6/e6 pressure remains. Consider ...a6, ...Qc7 and ...Rd8, but calculate e5/Nd5 tactics before every slow move.
FENr1bq1rk1/pp2bppp/2nppn2/8/2B1P3/2N2N2/PP2QPPP/R1BR2K1 w - - 6 10

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17. Morra declined — transposing to the Alapin

1. e4 c5 2. d4 cxd4 3. c3 Nf6 4. e5 Nd5 5. cxd4 d6 6. Nf3 e6 7. Bc4 Nc6 8. O-O Be7 9. Nc3 Nxc3 10. bxc3 O-O

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
3... Nf6
...Nf6 declines the second pawn and leads to Alapin-type play. Accepting the gambit is not compulsory if you dislike defending a long initiative.
10... O-O
White has a c3-d4-e5 chain; Black should undermine d4 or e5 instead of using only the c-file. Bc8 will develop after central changes.
FENr1bq1rk1/pp2bppp/2npp3/4P3/2BP4/2P2N2/P4PPP/R1BQ1RK1 w - - 1 11

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18. Closed Sicilian — the Bg7 exchange

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 e5 7. Qd2 Nge7 8. Bh6 O-O 9. Bxg7 Kxg7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
3... g6
...g6 builds a fianchetto against the slow centre. ...e5 gains space but leaves d5 as a possible blockade square.
9... Kxg7
After Bxg7 Kxg7 the king must defend dark squares himself. Prepare ...Rb8 and ...b5, while watching f4 and Nd5. Losing Bg7 changes the king-attack assessment.
FENr1bq1r2/pp2npkp/2np2p1/2p1p3/4P3/2NP2P1/PPPQ1PBP/R3K1NR w KQ - 0 10

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19. Grand Prix — remove the bishop with ...Nd4

1. e4 c5 2. Nc3 Nc6 3. f4 g6 4. Nf3 Bg7 5. Bb5 Nd4 6. O-O Nxb5 7. Nxb5 d6 8. d3 Nf6 9. Qe1 O-O

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
5... Nd4
...Nd4 attacks Bb5 and uses the absence of c3. ...Nxb5 gains the bishop pair but permits a white knight on b5.
9... O-O
Qe1 signals Qh4 and an attack. Black should develop Bc8 and undermine e4; sometimes ...d5 is the best defence, but it needs control of d5.
FENr1bq1rk1/pp2ppbp/3p1np1/1Np5/4PP2/3P1N2/PPP3PP/R1B1QRK1 w - - 3 10

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20. 2.f4 — central counterattack with ...d5

1. e4 c5 2. f4 d5 3. exd5 Nf6 4. Bb5+ Bd7 5. Bxd7+ Qxd7 6. Nf3 Nxd5 7. O-O Nc6 8. d3 e6 9. Nc3 Be7

Why these moves? Annotations · 4
1. e4
e4 occupies the centre and opens Bf1. Black chooses asymmetry rather than defending e5 as in open games.
1... c5
...c5 controls d4 from the side. ...cxd4 gives Black a half-open c-file and changes the central-pawn balance.
2... d5
...d5 challenges the centre before White develops Nc3. ...Nf6 recovers the pawn through development instead of rushing with the queen.
9... Be7
Black has a healthy centre and easy castling. White may pressure e6 with f5, so Bc8 development and rook coordination matter more than another a-pawn move.
FENr3k2r/pp1qbppp/2n1p3/2pn4/5P2/2NP1N2/PPP3PP/R1BQ1RK1 w kq - 2 10

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Check your understanding

Why is ...a6 not a complete plan?

It covers b5 but does not develop pieces or automatically defend e6/f7. It must lead to further mobilisation.

What is the cost of ...e5?

Black gives up pawn control of d5 and often leaves d6 as a target, in return for space and a tempo on Nd4.

Do all Anti-Sicilians lead to the Najdorf?

No. The Alapin, Morra and Moscow change the centre and development earlier. Reassess the structure.

Scope and sources

MoveForge educational treatment. Names and initial sequences were cross-checked against public opening classifications; commentary and plan selection are original. These are 20 selected chapters, not every possible move or a claim to the latest engine theory.

2026-09-17