Idea and repertoire boundaries
The strict Réti begins with 1.Nf3 d5 2.c4. The wider 1.Nf3 course also covers ...Nf6, ...c5, ...f5 and ...b6. Transpositions are explicitly labelled because the same first move does not imply the same theory. The five White repertoires are five choices, not one line covering every defence. The core here is c4, a fianchetto and deliberate d/e-pawn decisions.
White’s plan
White influences the centre from a distance with Bg2, Bb2 and c4. d3 preserves flexibility while d4 can enter the Catalan or QGD. Against ...d4, e3 is often essential to avoid being squeezed. On the queenside Rb1, a3 and b4 need a concrete purpose: opening a file or weakening a pawn, not merely gaining space.
Black’s plan
Black may build d5/e6 or d4/e5 centres, develop Bf5/Bg4 before ...e6 or accept c4. Without White’s d4, ...e5 may gain space freely. Black need not defend d5 passively: prepared ...d4 can restrict Bb2 and ...c5 challenges the centre. Recognising these plans matters more than preserving one setup at all costs.
Structures and pawn breaks
After ...dxc4 and e3/Bxc4 an open centre often follows. After ...d4, c4 no longer directly challenges the d-pawn: choose e3 or flank play. If Black builds c5-e5, d5 becomes a target, but a piece must actually reach it. d4 with Bg2 creates a Catalan structure. Naming the structure after each break avoids using a plan from the previous position.
Move order and tactics
Qa4+ recovers c4 but brings the queen out early. In ...Bg4 lines an exchange on f3 can force exf3 and change king cover. A fianchetto does not guarantee safety: ...Bh3 can exchange a vital defender. Calculate ...e5 with tempo, ...Nb4 against Qd3 and c2 attacks. Verify transpositions by the full piece placement, not a similar name.
Transition to the middlegame and endgame
The middlegame often requires patient manoeuvring with a prepared pawn break. A fianchettoed bishop may be strong in an open centre and weak behind its own chain. After a queen trade, rook activity and king access to the centre outweigh the original flank attack. Before trading Bg2 or Bb2 consider whether the opponent gains a permanent central or king-side square.
How to train this course
First learn the three reply families to 2.c4: ...e6/...c6, ...dxc4 and ...d4. Then choose responses to symmetrical ...c5 and a fianchetto. Finally compare two deliberate departures: d4 into the Catalan and e4 without c4 into the King’s Indian Attack. Summarise each tabiya by naming your pawn break and the bishop it will improve.
Annotated variations
SAN: N — knight, B — bishop, R — rook, Q — queen, K — king.
1. Réti against ...e6 — double fianchetto
1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3 c5 7. Bb2 Nc6 8. d3 d4 9. e3 e5 10. exd4 cxd4 11. Re1
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 2... e6
- ...e6 reinforces d5 but closes in Bc8. White attacks the centre with bishops on b2 and g2, delaying a commitment of the d-pawn.
- 11. Re1
- After ...d4 and ...e5 White cannot remain passive. exd4 changes the chain and Re1 pressures e5. Assess both b4 and central exchanges.
FEN
r1bq1rk1/pp2bppp/2n2n2/4p3/2Pp4/1P1P1NP1/PB3PBP/RN1QR1K1 b - - 1 112. ...e6 with early b3 — a QGD transposition
1. Nf3 d5 2. c4 e6 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. Be2 c5 7. O-O Nc6 8. d4 cxd4 9. exd4 b6
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 8. d4
- d4 changes the Réti into a Queen’s Gambit structure. This is a deliberate transposition: now assess c/d tension rather than only distant pressure.
- 9... b6
- After exd4, c4 and d4 occupy the centre. Black can develop ...Bb7 and pressure d4. Develop Nb1 before beginning a flank attack.
FEN
r1bq1rk1/p3bppp/1pn1pn2/3p4/2PP4/1P3N2/PB2BPPP/RN1Q1RK1 w - - 0 103. Anglo-Slav — ...Bf5 and d3
1. Nf3 d5 2. c4 c6 3. g3 Nf6 4. Bg2 Bf5 5. O-O e6 6. d3 h6 7. b3 Be7 8. Bb2 O-O 9. Nbd2
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 4... Bf5
- ...Bf5 develops before ...e6, avoiding a blocked bishop. d3 keeps flexibility: White can later choose e4 or b3 pressure.
- 9. Nbd2
- Nbd2 coordinates with Bb2. When preparing e4, check ...Bh7 and ...dxe4; a blocked b2-g7 diagonal may require a new plan.
FEN
rn1q1rk1/pp2bpp1/2p1pn1p/3p1b2/2P5/1P1P1NP1/PB1NPPBP/R2Q1RK1 b - - 4 94. Anglo-Slav — early b3
1. Nf3 d5 2. c4 c6 3. b3 Bf5 4. Bb2 e6 5. g3 Nf6 6. Bg2 Nbd7 7. O-O Be7 8. d3 O-O 9. Nbd2
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. b3
- b3 prepares immediate Bb2. It does not abandon the centre: c4 already challenges d5 and e4 remains a potential break.
- 9. Nbd2
- After balanced development the rooks may use c1/e1. Avoid a long series of improving moves without an answer to ...e5.
FEN
r2q1rk1/pp1nbppp/2p1pn2/3p1b2/2P5/1P1P1NP1/PB1NPPBP/R2Q1RK1 b - - 2 95. The ...Bg4 system — structure after Bxf3
1. Nf3 d5 2. c4 c6 3. b3 Bg4 4. Bb2 Nd7 5. g3 Bxf3 6. exf3 e6 7. Bg2 Ngf6 8. O-O Bd6 9. d4 O-O
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 6. exf3
- exf3 keeps Bg2 and opens the e-file, but creates doubled f-pawns. Do not automatically substitute gxf3: the structure would differ.
- 9... O-O
- d4 reinforces the centre and permits Re1. Black can use e5 or kingside pressure; White has the bishop pair and e-file.
FEN
r2q1rk1/pp1n1ppp/2pbpn2/3p4/2PP4/1P3PP1/PB3PBP/RN1Q1RK1 w - - 1 106. Réti accepted — recovering the pawn with Bxc4
1. Nf3 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. O-O a6 6. d4 c5 7. Qe2 Nc6 8. Rd1 cxd4 9. exd4 Be7
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. e3
- e3 opens Bf1 and prepares to recover c4. White need not hurry with the queen; development itself recovers the pawn.
- 9... Be7
- After ...cxd4 exd4 White has an isolated d4-pawn. Use activity and a possible d5 break; avoid exchanging mechanically into a passive endgame.
FEN
r1bqk2r/1p2bppp/p1n1pn2/8/2BP4/5N2/PP2QPPP/RNBR2K1 w kq - 1 107. Réti accepted — Qa4+ and immediate recovery
1. Nf3 d5 2. c4 dxc4 3. Qa4+ c6 4. Qxc4 Nf6 5. g3 Bf5 6. Bg2 e6 7. O-O Be7 8. d3 O-O 9. Qb3
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. Qa4+
- Qa4+ forces a reply to check and Qxc4 recovers the pawn. The price is early queen development and possible lost tempi.
- 9. Qb3
- Qb3 pressures b7. Develop Nb1 and prepare e4; after ...Qb6 a queen exchange may be preferable to another excursion.
FEN
rn1q1rk1/pp2bppp/2p1pn2/5b2/8/1Q1P1NP1/PP2PPBP/RNB2RK1 b - - 2 98. Réti accepted — ...Be6 and Na3
1. Nf3 d5 2. c4 dxc4 3. e3 Be6 4. Na3 Nc6 5. Nxc4 Bxc4 6. Bxc4 e6 7. O-O Nf6 8. d4 Bd6 9. Re1 O-O
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 4. Na3
- Na3 attacks c4 without an early queen move. After exchanges on c4 White recovers the pawn and develops comfortably.
- 9... O-O
- d4 and Re1 enter classical central play. Black may prepare ...e5; White has the bishop pair after trading a knight for Be6. Develop Bc1 and assess opening the centre.
FEN
r2q1rk1/ppp2ppp/2nbpn2/8/2BP4/4PN2/PP3PPP/R1BQR1K1 w - - 3 109. The ...d4 advance — immediate e3
1. Nf3 d5 2. c4 d4 3. e3 Nc6 4. exd4 Nxd4 5. Nxd4 Qxd4 6. Nc3 Nf6 7. d3 c6 8. Be3 Qd8 9. d4
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. e3
- e3 undermines the advanced pawn before Black builds an ...e5 centre. After exchanges White develops a knight with tempo on the queen.
- 9. d4
- d4 occupies the centre after driving the queen back. White has used time well but still needs Bf1 development and castling.
FEN
r1bqkb1r/pp2pppp/2p2n2/8/2PP4/2N1B3/PP3PPP/R2QKB1R b KQkq - 0 910. ...d4 — fianchetto before e3
1. Nf3 d5 2. c4 d4 3. g3 Nc6 4. Bg2 e5 5. d3 Nf6 6. O-O Be7 7. e3 O-O 8. exd4 exd4 9. Re1
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. g3
- g3 prepares king safety first while conceding space. A later e3 must suit the actual placement of the pieces.
- 9. Re1
- Re1 uses the open e-file. The d4-pawn restricts White; seek a blockade with Nbd2-b3 or central pressure rather than passive moves.
FEN
r1bq1rk1/ppp1bppp/2n2n2/8/2Pp4/3P1NP1/PP3PBP/RNBQR1K1 b - - 1 911. ...d4 — b4 and gaining space
1. Nf3 d5 2. c4 d4 3. b4 Nf6 4. g3 Bg4 5. Bg2 Nc6 6. b5 Na5 7. d3 e5 8. O-O Bd6
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3. b4
- b4 uses the changed central tension after ...d4. b5 can attack Nc6, but weakens queenside squares.
- 8... Bd6
- Black has an e5-d4 centre and can add ...O-O and ...Re8. White needs e3 or another break; b5 alone does not win the whole board.
FEN
r2qk2r/ppp2ppp/3b1n2/nP2p3/2Pp2b1/3P1NP1/P3PPBP/RNBQ1RK1 w kq - 2 912. Reversed Blumenfeld — a gambit illustration
1. Nf3 d5 2. c4 d4 3. e3 c5 4. b4 dxe3 5. fxe3 cxb4 6. d4 Nf6 7. Bd3 e6 8. O-O Be7 9. a3 bxa3 10. Bxa3
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 4. b4
- b4 sacrifices a wing pawn to build d4 and open files. This is a risky alternative, not a compulsory Réti main line.
- 10. Bxa3
- Bxa3 develops with pressure on e7. White is a pawn down and needs activity; Black can simplify rather than preserve every tension.
FEN
rnbqk2r/pp2bppp/4pn2/8/2PP4/B2BPN2/6PP/RN1Q1RK1 b kq - 0 1013. 1.Nf3 against fianchetto — an English structure
1. Nf3 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O e5 7. d3 Nc6 8. Rb1 a5 9. a3 Re8 10. b4
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3... Bg7
- This is an English structure against a King’s Indian setup because White has not played d4. Do not expect the same attack as in the classical King’s Indian.
- 10. b4
- Rb1, a3 and b4 create counterplay. Black’s ...a5 means b4 may be exchanged; assess the b-file opening and pressure on b7.
FEN
r1bqr1k1/1pp2pbp/2np1np1/p3p3/1PP5/P1NP1NP1/4PPBP/1RBQ1RK1 b - b3 0 1014. Symmetrical English — the d4 break
1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 cxd4 8. Nxd4 d6 9. Nc2 Be6 10. b3 Qa5
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 7. d4
- d4 breaks symmetry and activates a knight. After ...d6 Black wants ...d5 or pressure on c3.
- 10... Qa5
- Nc2 preserves the knight and supports b4/e3. Qa5 pressures c3 and a2; develop Bc1 and check b4 before playing it.
FEN
r4rk1/pp2ppbp/2npbnp1/q7/2P5/1PN3P1/P1N1PPBP/R1BQ1RK1 w - - 1 1115. Symmetrical English — flank play
1. Nf3 Nf6 2. c4 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d3 d6 8. Rb1 a6 9. a3 Rb8 10. b4 cxb4 11. axb4
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 7. d3
- d3 keeps tension instead of opening d4. Rb1 and a3 prepare b4 under conditions where the rook benefits from an open file.
- 11. axb4
- After axb4 the b-rooks face each other through pawns. Secure b4 and develop Bc1 before extending the advance.
FEN
1rbq1rk1/1p2ppbp/p1np1np1/8/1PP5/2NP1NP1/4PPBP/1RBQ1RK1 b - - 0 1116. English — Black builds e5
1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 4. g3 g6 5. Bg2 Bg7 6. O-O Nge7 7. d3 O-O 8. Ne1 d6 9. Nc2
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 3... e5
- ...e5 gives Black space but leaves d5 as a pressure point. White need not respond with immediate d4.
- 9. Nc2
- Ne1-c2 prepares b4 but costs tempi. Watch ...f5: if Black exposes the king, central pressure may become more important.
FEN
r1bq1rk1/pp2npbp/2np2p1/2p1p3/2P5/2NP2P1/PPN1PPBP/R1BQ1RK1 b - - 1 917. 1.Nf3 against the Dutch
1. Nf3 f5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. d3 O-O 6. e4 d6 7. Nc3 Nc6 8. Re1 e5 9. exf5 Bxf5
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 1... f5
- ...f5 allows an e4 challenge after d3 preparation. This is a specific Dutch plan, not automatic c4 on move two.
- 9... Bxf5
- After exf5 Bxf5 White can pressure d5 and e5. Watch ...Qd7 and ...Bh3 exchanging the important g2-bishop.
FEN
r2q1rk1/ppp1b1pp/2np1n2/4pb2/8/2NP1NP1/PPP2PBP/R1BQR1K1 w - - 0 1018. 1...b6 — transition to central play
1. Nf3 b6 2. g3 Bb7 3. Bg2 e6 4. O-O Nf6 5. c4 Be7 6. Nc3 O-O 7. d4 d5 8. cxd5 exd5 9. Bf4
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 1... b6
- ...b6 prepares a long-diagonal bishop. Starting 1.Nf3 does not require abandoning the centre: c4 and d4 may be natural.
- 9. Bf4
- After cxd5 exd5 White pressures the centre and Bf4 develops outside the pawn chain. Black may prepare ...c5 to challenge d4.
FEN
rn1q1rk1/pbp1bppp/1p3n2/3p4/3P1B2/2N2NP1/PP2PPBP/R2Q1RK1 b - - 1 919. King’s Indian Attack — an alternative to Réti
1. Nf3 d5 2. g3 Nc6 3. Bg2 e5 4. d3 Nf6 5. O-O Be7 6. e4 O-O 7. Nbd2 Re8 8. c3 Bf8 9. Re1
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 7. Nbd2
- e4 and Nbd2 create a King’s Indian Attack. Omitting c4 is a deliberate repertoire change, not the same Réti centre.
- 9. Re1
- Re1 supports e4; d4 or exd5 may open the centre. Before h4-h5 assess ...dxe4 and the development of Bc1.
FEN
r1bqrbk1/ppp2ppp/2n2n2/3pp3/4P3/2PP1NP1/PP1N1PBP/R1BQR1K1 b - - 2 920. Transposing to the Catalan — an open line
1. Nf3 e6 2. g3 d5 3. Bg2 Nf6 4. O-O Be7 5. c4 O-O 6. d4 dxc4 7. Qc2 a6 8. Qxc4 b5 9. Qc2 Bb7
Why these moves? Annotations · 3
- 1. Nf3
- Nf3 develops and controls e5/d4 without committing the central pawns. Later c4, d4 or e4 chooses a specific structure.
- 6. d4
- d4 with Bg2 enters the Catalan. After ...dxc4 Qc2 prepares to recover the pawn without blocking the diagonal.
- 9... Bb7
- ...b5 and ...Bb7 develop Black’s pieces with tempi against the queen. White can use a4 or Nbd2 for long-diagonal pressure. Recovering the pawn is not the end of the opening.
FEN
rn1q1rk1/1bp1bppp/p3pn2/1p6/3P4/5NP1/PPQ1PPBP/RNB2RK1 w - - 2 10Check your understanding
Does 1.Nf3 require avoiding d4?
No. d4 can deliberately transpose to the QGD or Catalan. Reassess the resulting structure.
Why is e3 important against ...d4?
It undermines the advanced pawn and may open the centre before Black stabilises it with ...e5.
What do you gain and lose with Qa4+?
A quick way to recover c4, but the queen may then be attacked by developing pieces.
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