Réti Opening: Advance Variation (2...d4 · A09)

ECO A09 · Vol.23 · Ch.1 · 1. Nf3 d5 2. c4 d4

EPD: rnbqkbnr/ppp1pppp/8/8/2Pp4/5N2/PP1PPPPP/RNBQKB1R w KQkq - · Eval +0.20

Used by Richard Réti to end José Raúl Capablanca's eight-year unbeaten streak at New York 1924, the Réti Opening Advance Variation (A09: 1. Nf3 d5 2. c4 d4) is the founding monument of hypermodernism. Rather than occupying the center with pawns, White provokes Black into advancing 2...d4 and systematically undermines that spearhead from the flanks via 3. b4, 3. e3, or a Reversed Benoni 3. g3.

Luring Black's pawn forward to d4 is the whole hypermodern trap—chip away at its foundations immediately with 3. b4 or 3. e3 instead of letting Black cement ...c5 + ...Nc6!

Historical Origins & Pawn-Structure DNA

1924 New York International Tournament (Richard Réti vs Capablanca) · Double Fianchetto Flank Control (Réti) & e4–d3–g3 Kingside Wedge (KIA) · Richard Réti, Tigran Petrosian, Bobby Fischer, Vladimir Kramnik, Levon Aronian

At New York 1924, Richard Réti famously defeated José Raúl Capablanca—ending the Cuban World Champion's eight-year undefeated streak—using 1. Nf3 and double-fianchetto flank pressure, heralding a new era in chess thought.

In the Réti, raking bishops on g2 and b2 x-ray Black's center while c4 and b3/e3 nibble at d5; in the King's Indian Attack (a favorite of young Bobby Fischer against French and Sicilian setups), White locks e5 and launches a devastating h4–Nf1–Nh2–Ng4 kingside wave.

White's Strategic Blueprint

Dynamic Flank Gambit (3. b4!): stop Black from supporting d4 comfortably with ...c5, fianchetto Bb2, and follow up with e3 or g3 to dissolve d4.
Reversed Benoni Squeeze (3. g3 Nc6 4. Bg2 e5 5. d3): play a Modern Benoni with colors reversed and an extra tempo—launching b4 or e3 at leisure!
Immediate Central Chip (3. e3 Nc6 4. exd4 Nxd4 5. Nxd4 Qxd4 6. d3): drag Black's queen out early to harass it via Nc3 and Be3.

Black's Counterplay & Breaks

Against 3. b4, strike back with 3...f6! (preparing ...e5! to build a massive central steamroller) or solid 3...Bg4 / 3...c5 4. bxc5 Nc6.
Against 3. g3, seize full central space via 3...Nc6 (blocking c7? only after ...c5, or purposefully playing ...e5! without ...c5 so the f8-bishop stays active!).
Against 3. e3 c5! 4. exd4 cxd4, embrace the Reversed Benoni from the White-style space side, routing ...Nc6, ...e5, and ...Nf6/f5.

Common Club Traps & Mistakes

Playing 2...d4 and then drifting passively without ...c5, ...Nc6, or ...e5 lets White chip away d4 via e3 and b4 until Black's center collapses completely.
As White in 3. g3 Nc6 4. Bg2 e5, forgetting 5. d3?? allows Black to roll 5...e4! chasing the f3-knight back to g1 in embarrassment!

Canonical ECO Sub-Variations

A09 Réti Opening: Advance Variation: 1. Nf3 d5 2. c4 d4 (rnbqkbnr/ppp1pppp/8/8/2Pp4/5N2/PP1PPPPP/RNBQKB1R w KQkq -)
A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation: 1. Nf3 d5 2. c4 c6 3. b3 (rnbqkbnr/pp2pppp/2p5/3p4/2P5/1P3N2/P2PPPPP/RNBQKB1R b KQkq -)
A12 Réti Opening: Anglo-Slav Variation, Capablanca Variation: 1. c4 Nf6 2. Nf3 c6 3. b3 d5 4. Bb2 Bg4 (rn1qkb1r/pp2pppp/2p2n2/3p4/2P3b1/1P3N2/PB1PPPPP/RN1QKB1R w KQkq -)
A12 Réti Opening: Anglo-Slav Variation, New York System: 1. Nf3 Nf6 2. c4 c6 3. b3 d5 4. Bb2 Bf5 (rn1qkb1r/pp2pppp/2p2n2/3p1b2/2P5/1P3N2/PB1PPPPP/RN1QKB1R w KQkq -)
A12 Réti Opening: Anglo-Slav Variation, with dxc4: 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 dxc4 (rnbqkb1r/pp2pppp/2p2n2/8/2p5/1P3NP1/P2PPP1P/RNBQKB1R w KQkq -)
A12 Réti Opening: Anglo-Slav Variation, Bogoljubow Variation: 1. Nf3 d5 2. c4 c6 3. b3 Bf5 (rn1qkbnr/pp2pppp/2p5/3p1b2/2P5/1P3N2/P2PPPPP/RNBQKB1R w KQkq -)

FAQ

Why did Richard Réti WANT Black to push 2...d4 into White's half of the board?

Classical dogma assumed space always favored the pusher; Réti proved an advanced pawn on d4 can become overextended when hit by b4, e3, and a sniper bishop on b2 or g2!

Why is 5. d3 mandatory in the 3. g3 Nc6 4. Bg2 e5 Reversed Benoni line?

Without 5. d3 stopping ...e4, Black immediately plays 5...e4!—and since d4 and e5 are guarded by Black's pawns/knight, White's f3-knight is forced all the way home to g1!

What is the tactical point behind White's aggressive 3. b4!?

3. b4 physically prevents Black from playing a quiet ...c5 to buttress d4; if Black plays 3...c5 anyway, 4. bxc5 Nc6 5. d3 e5 lets White pressure the queenside along the open b-file.

Grandmasters Who Weaponized This Technique

Gukesh Dommaraju (IND · 2794 · Champ at 18) — 18th World Champion · Youngest Undisputed World Champion in History
Hikaru Nakamura (USA · 2816 FIDE · #2) — 5× U.S. Champion · 2816 Peak & Modern Chaos / Defense Wizard

A14 · Réti Anglo–Slav: Double Fianchetto System (A14) · A05 · King's Indian Attack: Smyslov & Universal Setups (A05) · A08 · Zukertort Opening: Reversed Grünfeld (4. d4 · A08) · Queen Endgames: Checks & X-Ray Skewers