Réti Opening: Anglo-Slav Variation, London Defensive System (5… e6 6. Bb2)
1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 5. Bg2 e6 6. Bb2
The Réti Opening: Anglo-Slav Variation, London Defensive System is a chess opening classified as ECO A12, reached after 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 5. Bg2 e6 6. Bb2. It is a line of the Réti Opening. Black is to move.
This exact move order didn't appear in our sample of 12.6 million Lichess games: it's a rare line.
Engine evaluation: 0.00 (Stockfish, depth 40; best line 6… Nbd7 7. O-O h6 8. Nc3 Be7 9. d4)
- ECO
- A12
- Moves
- 11 plies
- FEN
rn1qkb1r/pp3ppp/2p1pn2/3p1b2/2P5/1P3NP1/PB1PPPBP/RN1QK2R b KQkq - 1 6- PGN
1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 5. Bg2 e6 6. Bb2
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Master games
3 over-the-board games are classified under this line (White 33%, draw 34%, Black 33%). The strongest:
- Pawel Maj (2203) – FM Mateusz Paszewski (2282) 1/2-1/2 · XLI Ludwika Zamenhofa Mem · 2022-12-30
- WGM Olga Sikorova (2276) – WIM Nodirjanova, N. (2167) 1-0 · Olympiad Women 2018 · 2018-10-02
- Alexandro Brum Sosa (1807) – Eduardo Blank Goncalves (2060) 0-1 · 5th Floripa Open 2019 · 2019-01-22
Comes from
Réti Opening: Anglo-Slav Variation, London Defensive System (4… Bf5 5. Bg2) 1. c4 Nf6 2. g3 c6 3. Nf3 d5 4. b3 Bf5 5. Bg2
More Réti Opening lines (all)
- Réti Opening A09
- Réti Opening: Advance Variation A09
- Réti Opening: Advance Variation, Michel Gambit A09
- Réti Opening: Advance Variation, Navara Gambit A09
- Réti Opening: Penguin Variation A09
- Réti Opening: Reversed Blumenfeld Gambit A09
- Réti Opening: Réti Accepted A09
- Réti Opening: Réti Gambit, Keres Variation A09
- Réti Opening: Zilbermints Gambit A09
- Réti Opening: Anglo-Slav Variation, Gurevich System (2… d5 3. e3) A11
- Réti Opening: Anglo-Slav Variation, Gurevich System (3… Nf6 4. Qc2) A11
- Réti Opening: Anglo-Slav Variation, Gurevich System (4… Nbd7 5. Qc2) A11
Opening names and moves from the Lichess openings dataset; statistics from the Lichess open database, 2026-09 (CC0), sample of 12.6 million games, bots excluded; evaluations from Lichess cloud analysis (all CC0). Master games from The Week in Chess #920–#1664 by Mark Crowther, used with permission.