Chessy
English Opening: Agincourt Defense (d4) – Playing as Black
You have chosen the Agincourt Defense against the English Opening, a solid and flexible system that lets you steer the game toward structures you already know from the Queen's Gambit or Nimzo-Indian. After 1.c4 e6 2.d4 Nf6, White has reached a crossroads — and the statistics show that this position is far from decided. Across nearly 14 million games, White wins 49.9%, Black wins 46.0%, and draws happen 4.1% of the time. Black's chances are real, but you need a plan. The drill below will test you against the most critical continuations, starting right after your last move.
Play the English Opening: Agincourt Defense: d4 against the engine
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The Agincourt Defense (1.c4 e6 2.d4 Nf6) is Black's way of saying: you are not getting the centre for free. By postponing ...d5, you keep the tension and invite White to commit first. Stockfish evaluates the position at +0.38, a small plus for White, meaning you are slightly worse with accurate play but absolutely in the game. Your main idea is to challenge the d4-c4 duo with ...d5 at the right moment, often after White has revealed their plan with moves like Nc3, Nf3, or g3. The pawn structure that results — a symmetrical central chain or a hanging-pawn setup — will feel comfortable if you play typical Queen's Gambit Declined or Nimzo-Indian positions.
The Engine's Recommended Line
At depth 16, Stockfish's top choice for White is 3.g3, intending 3...d5 4.Bg2 Bb4+. This line introduces a Queen's Gambit-style battle with a fianchettoed king's bishop staring down the long diagonal. After 4...Bb4+, Black pins the knight and is ready to castle quickly or trade on c3 if White interposes there. The ...Bb4+ check is a key resource — it forces White's hand and disrupts the natural g3-Bg2-Nf3 development sequence. Do not panic if White avoids this: most opponents will play something else.
What the Statistics Reveal
By far the most popular response is 3.Nc3, appearing in over 8.9 million games (White scores 50.1%). 3.Nf3 follows with 2,089,329 games (White 50.7%). Both give White a tiny edge in winning percentage, but Black's 46-47% win rate is fully respectable. The surprises come at the lower end: 3.e3 and 3.Bg5 both see White score below 49%, meaning Black actually outperforms the first-player average from those moves. If you face 3.e3 (742,658 games, White 48.4%) or 3.Bg5 (697,601 games, White 48.2%), you are statistically favoured to outscore your opponent. The line 3.g3 (238,470 games) gives White the highest score at 52.5%, which aligns with the engine's preference — but it is also the least tested, so many opponents will not know the subtleties.
Handling the Most Common Replies
When White plays 3.Nc3, you can continue with ...d5, entering a Queen's Gambit Declined setup that is solid and well-known. If White chooses 3.Nf3, again ...d5 is natural, and you should be ready for a quiet positional fight. Against 3.e3, a fianchetto with ...b6 is a good plan, since White's pawn on e3 blocks their dark-squared bishop. And if 3.Bg5 appears, treat it like a Torre Attack: ...d5 and ...c5 are the typical ideas. No matter which road White takes, your task in the drill is to find the best reply and keep your small disadvantage from growing.
When This Opening Suits You
The Agincourt Defense is an excellent choice if you already play the Queen's Gambit Declined, Nimzo-Indian, or Bogo-Indian with Black. The positions after ...d5 transpose directly into those lines, so you get to reuse a repertoire you already know. It is also a good weapon against 1.c4 players who dislike facing ...e6 systems — many of them would rather see ...c5 or ...g6. If you prefer clear structural plans over sharp tactical battles and do not mind a small edge for the opponent early on, this opening will serve you well.
Results across 13,880,123 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| Nc3 | 8,955,459 | 50.1% |
| Nf3 | 2,089,329 | 50.7% |
| e3 | 742,658 | 48.4% |
| a3 | 715,848 | 50.0% |
| Bg5 | 697,601 | 48.2% |
| g3 | 238,470 | 52.5% |
Frequently asked questions
Is the Agincourt Defense a good opening for Black?
Yes, it is a reputable system. Statistics across nearly 14 million games show Black wins 46.0% of the time, which is healthy for a second-player opening. Stockfish gives White a small plus (+0.38), but that is normal for most solid openings — you are not fighting for equality, you are fighting for a playable middlegame.
What is the difference between the Agincourt Defense and the Queen's Gambit Declined?
The Agincourt Defense starts with 1.c4 e6 2.d4 Nf6, without an immediate ...d5. Black waits one move, keeping the option to play ...d5 or ...Bb4+ depending on White's third move. In the Queen's Gambit Declined (1.d4 d5 2.c4 e6), Black commits to ...d5 on move one. Here you are playing a Queen's Gambit Declined by transposition, but with extra flexibility.
What should I do if White plays 3.g3 against the Agincourt Defense?
The engine's best reply is 3...d5, and after 4.Bg2 you can play 4...Bb4+, pinning the knight and forcing White to deal with the check. This is a well-known idea from the Catalan and gives you comfortable development. White scores 52.5% from 3.g3, so be precise — but if you know the ...Bb4+ plan, you will be fine.
Why does White score lower after 3.e3 than after 3.Nc3?
3.e3, played in over 742,000 games, gives White only 48.4% — below 50%. The move is passive; White blocks the dark-squared bishop and does not pressure the centre immediately. Black can reply with ...b6, fianchettoing the bishop and out-developing White. It is a good result to see on the board as Black.
How many games feature the English Opening: Agincourt Defense: d4?
Over 14 million Lichess games have reached the English Opening: Agincourt Defense: d4 position. White wins 49.9%, Black wins 46.0%, with 4.1% draws — based on real rated games.