Chessy
English: Four Knights: e3 – How to Play as Black
After 1.c4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.e3 Bb4, you reach one of the most balanced starting points in the English Opening. The engine evaluates the position at +0.00 — dead level. Neither side has a meaningful advantage yet, which means the next few moves will decide who seizes the initiative. White has several popular continuations, and the statistics reveal that some of them are outright mistakes. Your task is to recognise them, punish them, and steer the game toward a middlegame where you feel comfortable. The interactive drill below will sharpen your instincts.
Play the English: Four Knights: e3 against the engine
Free, no signup — you play black, the engine adapts to your level.
Jump into the interactive drill below and practise meeting White's most common replies — including the mistakes a3 and Be2 — as Black. Create a free account to
Create a free account →The Fighting Spirit of …Bb4
By playing 4…Bb4, you pin the knight on c3 against the white king. This is a classic counterattacking move that puts immediate pressure on White's centre. You're not just developing — you're asking White to resolve the tension. The pin also discourages White from pushing d4 too easily, because after …Bxc3+ the b4-bishop can be recaptured, but White's pawn structure would be compromised. If White plays passively, you can follow up with d6, 0-0, and later …d5 to challenge the centre head-on. The position is symmetrical in activity, not in structure — your bishop on b4 is the key piece to watch.
The Engine's First Choice: Qc2
Stockfish's best move here is 5.Qc2, preparing to meet …Bxc3 with bxc3 while also guarding the e4-square. The engine's suggested continuation runs Qc2 d6 Be2 Bxc3 — Black immediately trades the bishop for the knight, doubling White's c-pawns. That trade is the thematic idea: you give up the bishop pair, but White's queenside pawns become a long-term target. In practice, White scores 53.5% after 5.Qc2, so this line is no pushover. Make sure you have d6 and …Bxc3 ready; do not delay the trade, or White may play a3 and gain a tempo.
The Two Mistakes to Punish
Two of White's most popular replies are actually errors. If White plays 5.a3, it's a mistake worth roughly one pawn — the engine says Qc2 was better. After 5.a3 Ba5 (you can retreat to a5 or c5), White has wasted a tempo and weakened the b3-square. Black scores well here, and the statistics confirm it: White wins only 49.2% after a3. The second error is 5.Be2, classified as an inaccuracy (losing about half a pawn). After 5.Be2, you can play …d6 and follow with …Bxc3 when ready, or even …0-0 first. White's passive development gives you time to build a strong centre. Both mistakes reward you for staying alert.
What the Statistics Say About Your Chances
Across over 125,000 games from this exact position, Black wins 45.0% of the time, White wins 51.1%, and draws are rare at just 4.0%. That 45% is a healthy number for Black in a 1.c4 opening — you are by no means fighting for equality. White's most solid try is 5.d4 (31,688 games, 51.0% for White), which leads to Open Sicilian-style play with colours reversed. If you face 5.Nd5 (White scores 54.5%), be precise: you can trade knights or pin again with …d6. The key takeaway: trust the position. +0.00 means you have full play, and the stats back it up.
Results across 125,781 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| d4 | 31,688 | 51.0% |
| a3 | 25,467 | 49.2% |
| Qc2 | 21,391 | 53.5% |
| Nd5 | 15,545 | 54.5% |
| Be2 | 13,865 | 51.0% |
| Qb3 | 7,560 | 50.8% |
Frequently asked questions
Is the English Four Knights e3 a good opening for Black?
Yes. The position after 4…Bb4 is evaluated at +0.00, meaning perfect play leads to equality. Black scores a solid 45.0% in practice, and many of White's most common replies are either mistakes (a3) or inaccuracies (Be2). You can play this line confidently as Black.
What is the best reply to 5.a3 in the English Four Knights e3?
After 5.a3, retreat your bishop to a5 (or c5). The move a3 is a mistake worth about one pawn — White has weakened the b3-square and lost a tempo. You can follow up with d6, 0-0, and prepare …d5 to take over the centre.
Should Black trade the bishop on b4 for the knight on c3?
Yes, in many lines — especially after 5.Qc2 d6 Be2, the engine recommends …Bxc3. You give up the bishop pair, but you damage White's pawn structure on the queenside, creating long-term targets. Just make sure you have d6 played first to support the centre.
Why does the engine recommend 5.Qc2 for White here?
5.Qc2 is the engine's top choice because it defends the c3-knight and prepares to recapture with the queen or pawn if you trade on c3. It also discourages you from playing …d5 too quickly. White scores 53.5% after Qc2, so it's the most challenging reply.
How many games feature the English: Four Knights: e3?
Over 125K Lichess games have reached the English: Four Knights: e3 position. White wins 51.1%, Black wins 45.0%, with 4.0% draws — based on real rated games.