Sicilian Alapin
Sicilian Alapin
Occupies the centre, frees bishop and queen.
Overview
The Alapin Sicilian (ECO B22) is the great "anti-Sicilian" reply: after 1.e4 c5, White plays 2.c3 to prepare d4 and rebuild the ideal e4-d4 centre that the Sicilian is precisely designed to prevent. Named after the Russian master Semyon Alapin (1856-1923), it remained marginal for decades before being rehabilitated in the 1980s by specialists such as Evgeny Sveshnikov, who turned it into a respected tournament weapon.
The key idea is disarmingly simple: instead of entering the jungle of the Open Sicilians (2.Nf3 then 3.d4), White supports d4 with the c-pawn. If Black does nothing, the e4-d4 duo (often converted into d4-e5) gives a lasting space advantage. Black must therefore react immediately in the centre, and has only two main replies: 2...Nf6, attacking e4 and accepting that the knight will be chased by e5, and 2...d5, liquidating e4 but exposing the queen after 3.exd5 Qxd5.
Against 2...d5, the resulting structure — an isolated queen’s pawn on d4 after the exchanges on d4 — is one of the most instructive in chess: White gets piece activity and strong squares (e5), Black a clear plan of blockade and a favourable endgame. Against 2...Nf6, White gains space with e5 and d4 and plays on the central majority.
It is the perfect opening for the positional player who refuses to memorise twenty Najdorf variations: plans matter more than forced lines. Accessible from intermediate level (1200-1400 ELO), it is still used at the very top as a surprise weapon.
The main line, move by move
Every move is explained: play through them in order to understand the opening’s logic.
- 1. e4Occupies the centre, frees bishop and queen.
- 1… c5The Sicilian.
- 2. c3The Alapin: prepares d4 and a big centre.
- 2… Nf6Immediately attacks e4.
- 3. e5Pushes and gains a tempo on the knight.
- 3… Nd5The knight jumps forward.
- 4. d4Builds the big centre.
- 4… cxd4Central exchange.
- 5. Nf3Develops before recapturing on d4.
- 5… Nc6Develops with pressure on d4.
- 6. cxd4Recaptures, an e5 and d4 centre.
- 6… d6Attacks the e5 chain.
- 7. Bc4The bishop attacks the d5 knight.
- 7… Nb6Knight retreat, attacking the bishop.
- 8. Bb5Active retreat, pinning the c6 knight.
- 8… dxe5Takes in the centre.
- 9. Nxe5Recapture with the knight.
- 9… Bd7Unpins and develops.
- 10. Nxd7Exchange.
- 10… Qxd7Recapture.
Plans for both sides
White’s plan
White’s plan flows from 2.c3: push d4 under the best conditions and live off the space obtained. Against 2...Nf6 3.e5 Nd5, White builds the d4-e5 duo, develops naturally (Nf3, Bc4 questioning the d5-knight, sometimes Bb5 as a pin) and plays on two assets: central space and the potential attack against f7 and h7 once the pieces converge on the kingside. In the isolated queen’s pawn positions (after 2...d5), the plan is a classic of the genre: plant a knight on e5, aim the bishops at the kingside, push d4-d5 at the precise moment when opening lines favours the white pieces. As long as the queens stay on, the isolani is a strength; that is why White avoids mass exchanges and above all the queen trade. Two practical rules complete the plan: never recapture on d4 before developing (Nf3 first, the recapture later), and watch the d4-square — it is the one Black harasses with ...Nc6, ...e6 or ...Bg4. If Black wins the battle for d4, the Alapin loses its point.
Black’s plan
Black’s first duty is to strike at the centre before it consolidates. With 2...d5 3.exd5 Qxd5, Black accepts an early queen sortie — safe here because 4.Nc3 is impossible, the pawn sitting on c3 — and then plays against the d4-pawn: ...Nc6, ...Bg4 (pinning its natural defender), ...e6 and ...Nf6. The long-term goal: exchange pieces, blockade d4 with a knight on d5, and exploit the isolani’s weakness in the endgame. With 2...Nf6 3.e5 Nd5, Black plays in the style of an improved Alekhine’s Defence: the e5-pawn is an outpost but can be attacked by ...d6, and the d5-knight is untouchable (c3 is occupied by the pawn). Then come ...Nc6, ...dxe5 at the right moment and comfortable play against the overextended white centre. In both cases tactical vigilance remains essential: the d4-pawn is often poisoned (the motifs Bxc6 followed by Qxd4, or Nb5 after the queen trade, regularly cost material), and the black queen must never linger in the centre once the white pieces are developed.
Main variations
2...d5 Response
ECO B22Black hits the centre with 2...d5, the other main reply to the Alapin.
Solid 5...e6 Setup
ECO B22Black solidifies d5 with ...e6 rather than developing the knight to c6.
Sicilian Defense: Alapin Variation (2…Nc6)
ECO B22Frequent line: the 2…Nc6 reply (~30% at peer level). Engine-verified continuation.
Sicilian Defense: Alapin Variation (2…d6)
ECO B22Frequent line: the 2…d6 reply (~16% at peer level). Engine-verified continuation.
French Defense: Advance Variation, Paulsen Attack
ECO C02Frequent line: the 2…e6 reply (~15% at peer level). Engine-verified continuation.
Sicilian Defense: Alapin Variation, Barmen Defense
ECO B22Frequent line: 2…d5, the 4…Nc6 reply (~20% at peer level). Engine-verified continuation.
Sicilian Defense: Alapin Variation, Barmen Defense, Endgame Variation
ECO B22Frequent line: 2…d5, the 4…cxd4 reply (~34% at peer level). Engine-verified continuation.
Sicilian Defense: Alapin Variation, Smith-Morra Declined
ECO B22Frequent line: 5…e6, the 6…Nc6 reply (~32% at peer level). Engine-verified continuation.
Traps to know
The poisoned d4-pawn: 9.Bxc6+ wins the queen
Move sequence : 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 Nc6 5. Nf3 Bg4 6. Be2 cxd4 7. cxd4 Bxf3 8. Bxf3 Qxd4 9. Bxc6+ bxc6 10. Qxd4
The most frequent trap in the entire Alapin. Black believes the d4-pawn can be won cleanly after removing its defender with ...Bxf3: but 8...Qxd4?? runs into 9.Bxc6+! The bishop captures the knight WITH check — Black must recapture, and 10.Qxd4 scoops up the black queen left hanging. A whole queen for a pawn: the game is over. The lesson: by recapturing on f3 with the bishop, that bishop started eyeing c6, so the d4-pawn was defended indirectly.
The trapped endgame: 10.Nb5!
Move sequence : 1. e4 c5 2. c3 d5 3. exd5 Qxd5 4. d4 cxd4 5. cxd4 Nc6 6. Nf3 Bg4 7. Nc3 Bxf3 8. gxf3 Qxd4 9. Qxd4 Nxd4 10. Nb5
Here, grabbing d4 leads into a trapped endgame. After 7.Nc3! (offering the pawn while attacking the queen), the sequence 7...Bxf3 8.gxf3 Qxd4 9.Qxd4 Nxd4 appears to win a pawn while simplifying... but 10.Nb5! attacks the d4-knight and threatens the Nc7+ fork on king and rook at the same time. The black knight has no good square: 10...Nc2+ 11.Kd1 dooms it in the corner after ...Nxa1, where it will be rounded up, while Nc7+ harvests the a8-rook. Either way, White emerges from the "simplification" with the advantage.
The central fork 6.d5!
Move sequence : 1. e4 c5 2. c3 Nc6 3. d4 cxd4 4. cxd4 d5 5. Nc3 dxe4 6. d5 Ne5 7. Qa4+ Bd7 8. Qxe4
After 2...Nc6 3.d4 cxd4 4.cxd4 d5, the capture 5...dxe4 seems to win a central pawn. But 6.d5! turns the tables: the pawn chases the c6-knight, and after 6...Ne5 comes 7.Qa4+! — the in-between check that forces 7...Bd7 and buys time to recapture with 8.Qxe4. The balance sheet: equal material, but White has a dominant d5-pawn, an active queen, and the black e5-knight is about to be kicked by f4. Remember the mechanism: the d5-push plus the check on a4, a recurring tandem throughout the c3 family.
Typical pawn structures
The big d4-e5 centre
The Alapin’s dream structure after 2...Nf6: the d4-e5 duo grants a clear space advantage, d6 is a potential hole and the black knight has been pushed to the edge of the game. White’s plan: complete development (Bc4 or Be2, O-O), maintain e5 as long as possible and convert the space into a kingside attack. Black lives off the ...d6 lever: every exchange on e5 brings a symmetrical structure closer, where the space deficit fades. If White over-defends e5 at the cost of development, Black’s pressure on d4 (...Nc6, ...Qb6) takes over.
The isolated queen’s pawn (IQP) on d4
The Alapin’s signature structure after 2...d5: the d4-pawn is isolated — no c- or e-pawn to support it. While pieces remain, it is a strength: it guarantees the e5 outpost for a knight, opens the bishops' diagonals and prepares the d4-d5 break that frees the whole white army. White’s plan is therefore dynamic: Nc3, Bd3 or Bc4, Qe2, rooks to d1 and e1, always watching for the d5 moment. Black’s plan is its mirror image: blockade the d5-square (a knight!), exchange the active minor pieces, and head for the endgame where the isolani becomes a fixed target.
Results by rating level
Most-played lines (1600–1799 level)
- Knight retreat to d5Nd596%48% wins (White)
- Knight retreat to g8Ng83%56% wins (White)
- Active knight to e4Ne41%66% wins (White)
- Knight to g4 toward f2Ng40%74% wins (White)
- Central counter …d5d50%62% wins (White) ⓘ
- d60%80% wins (White) ⓘ
The percentage shows the move’s popularity (share of games that play it). White’s score stays near 50% because all of these lines are sound — popularity is what sets them apart.
Reference games
Step through each game at your own pace with the arrows — it opens at the end of the opening.
Carlsen, M. (2840) — Giri, A. (2760)Draw · 2025
Magnus Carlsen, chess’s living legend and all-time Elo record holder (2882 in 2014), continues to thrill the world by competing at the elite level even after stepping away from World Championship play. Facing him is Anish Giri, one of the most well-rounded grandmasters of his generation — renowned for his rock-solid draws, but equally famous for his sharp wit on social media! Two such exceptional chess minds clashing in a Sicilian Alapin promises a game of extraordinary precision and depth.
Analyse this game →Gukesh, D. (2764) — Wei Yi (2755)Black wins (resignation, time or agreement) · 2024
Dommaraju Gukesh, the Indian prodigy born in 2006, made history by becoming World Champion in 2024 at just 18 years old — the youngest ever to hold the title. Facing him is Wei Yi, a strong Chinese grandmaster who has been feared since his own teenage years for his sharp combinations and fierce tactical instincts. This clash between two exceptional Asian talents in a Sicilian Alapin is a vivid snapshot of the brilliant new generation now dominating world chess.
Analyse this game →Aronian, L. (2785) — Dominguez Perez, L. (2756)Draw · 2022
Levon Aronian, a former world number two and one of the most creative and elegant players of his generation, has represented the United States since 2021 after a long and celebrated career as Armenia’s standard-bearer. His opponent, Leinier Dominguez Perez, is also a naturalised American and one of the most experienced grandmasters on the circuit, renowned for his unshakeable solidity. A duel between two adopted compatriots in a Sicilian Alapin carries a distinctly unique flavour.
Analyse this game →Nakamura, Hikaru (2736) — Ding, Liren (2791)Draw · 2020
Hikaru Nakamura, five-time US Champion and the undisputed star of chess streaming on Twitch, is one of the sharpest and most feared players in both rapid and classical formats. Facing him is Ding Liren, future World Champion in 2023 and one of the finest players of the decade, bringing formidable strategic rigour and technical precision to every game. Watching these two clash in a Sicilian Alapin in 2020 — at the very height of the online chess explosion — makes this game a true emblem of its era.
Analyse this game →