English Opening: Agincourt Defense (5. e3 O-O)
1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O
The English Opening: Agincourt Defense is a chess opening classified as ECO A13, reached after 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O. It is a line of the English Opening. White is to move. 1 named line continues from this position.
In 12.6 million rated Lichess games (blitz and slower), this position was reached 4 times by this move order. White won 50%, 0% were drawn and Black won 50%. The most popular continuation is 6. Nc3 (50% of games).
Engine evaluation: 0.00 (Stockfish, depth 50; best line 6. Nc3 c5 7. d4 Nc6 8. cxd5 Nxd5)
- ECO
- A13
- Moves
- 10 plies
- FEN
rnbq1rk1/ppp1bppp/4pn2/3p4/2P5/1P2PN2/PB1P1PPP/RN1QKB1R w KQ - 1 6- PGN
1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O
Analyse with Stockfish · Board image (SVG) · Open on Lichess
Results by rating
| Average rating | Games | White / draw / Black |
|---|---|---|
| 1500-1999 | 2 | |
| 2000+ | 2 | |
| All | 4 |
Most played moves
| Move | Games | White / draw / Black |
|---|---|---|
| 6. Nc3 | 2 (50%) | |
| 6. d4 Agincourt Defense (5… O-O 6. d4) | 1 (25%) | |
| 6. Be2 | 1 (25%) |
Master games
36 over-the-board games are classified under this line (White 50%, draw 22%, Black 28%). The strongest:
- GM Evgeny Tomashevsky (2714) – GM Matthias Bluebaum (2616) 1/2-1/2 · Lasker 150 Blitz Swiss · 2018-04-28
- GM Parham Maghsoodloo (2705) – GM Ngoc Truong Son Nguyen (2600) 1-0 · 3rd 3-0 Thu 9th Jul 2026 · 2026-07-09
- GM Aleksandar Indjic (2613) – GM Harutyunian, T. (2524) 1-0 · 28th Abu Dhabi Masters · 2022-08-24
- IM Leon Mons (2504) – GM Falko Bindrich (2604) 1/2-1/2 · TCh-AUT 2017-18 · 2018-01-20
- GM Nijat Abasov (2643) – IM Vasily Usmanov (2450) 0-1 · Titled Tue 20th Dec Early · 2022-12-20
Search all games of the English Opening: Agincourt Defense and its sub-variations
Highest-rated Lichess games
- wasp1968 (2110) – micric (2252) 0-1 · 2026-09-03 · 180 + 2s
- wasp1968 (2106) – pyserial (2056) 1-0 · 2026-09-03 · 180 + 2s
- dthsdnxfn (1919) – Iwasoncealegend (1987) 0-1 · 2026-09-03 · 600 + 0s
Comes from
English Opening: Agincourt Defense (2. Nf3 d5) 1. c4 e6 2. Nf3 d5
Continuations
- English Opening: Agincourt Defense (5… O-O 6. d4) A13 · 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. d4
More English Opening lines (all)
- English Opening A10
- English Opening: Achilles-Omega Gambit A10
- English Opening: Adorjan Defense A10
- English Opening: Anglo-Dutch Defense A10
- English Opening: Anglo-Dutch Defense, Hickmann Gambit A10
- English Opening: Anglo-Dutch Variation, Chabanon Gambit A10
- English Opening: Anglo-Dutch Variation, Ferenc Gambit A10
- English Opening: Anglo-Lithuanian Variation A10
- English Opening: Anglo-Scandinavian Defense A10
- English Opening: Anglo-Scandinavian Defense, Löhn Gambit A10
- English Opening: Anglo-Scandinavian Defense, Malvinas Variation A10
- English Opening: Anglo-Scandinavian Defense, Schulz Gambit A10
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.