Chessy
Polish Defense: what to do as Black after 1.d4 b5
The Polish Defense is a sharp offbeat try with Black: 1.d4 b5. It asks White to prove the advantage immediately, and the main test comes at once because the engine already likes White here. That does not mean you should avoid the opening, but it does mean you need a clear plan and a good feel for the resulting positions. In the drill below, you will practise the critical moves White can choose and learn how Black should react without drifting into a worse game.
Play the Polish Defense against the engine
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Create a free account →What the position is telling you
Stockfish rates this +1.05, a clear, lasting advantage for White. That means you are worse here and need to play accurately from the first move after the opening line. The practical lesson is simple: do not treat 1.d4 b5 as a harmless sideline. White has several natural ways to punish the looseness, and if you are Black you must know the ideas behind your setup rather than just hoping for confusion.
The move you must be ready for
The engine’s best move here is e4, and its main continuation is e4 a6 a4 b4. That tells you the centre matters right away. If White plays actively in the middle, your queenside advance needs support and timing. In the drill, pay attention to how Black’s position can become cramped if you let White take space and keep the initiative.
What White actually plays most often
This exact position appears in 1,007,693 games in the Lichess database, so there is plenty of practical evidence to guide you. The most-played continuation is e4 with 345,083 games, followed by Bf4 with 176,658 games, Nf3 with 147,020 games, e3 with 126,843 games, c4 with 76,318 games, and Nc3 with 33,979 games. In other words, White usually chooses natural development or a central break, not something exotic.
The common mistakes to know
Three replies are flagged as inaccuracies, and they are important for your training. Bf4 is an inaccuracy and loses about 0.5 pawns, with e4 better. e3 is an inaccuracy and loses about 0.6 pawns, with Nd2 better. c4 is an inaccuracy and loses about 0.9 pawns, with Nd2 better. If you are Black, this is useful because it shows which White moves are not the most precise, even though White still keeps the better game overall.
Results across 1,007,693 Lichess games
| Most-played continuation | Games | White wins |
|---|---|---|
| e4 | 345,083 | 52.2% |
| Bf4 | 176,658 | 52.9% |
| Nf3 | 147,020 | 54.2% |
| e3 | 126,843 | 50.9% |
| c4 | 76,318 | 51.0% |
| Nc3 | 33,979 | 49.1% |
Frequently asked questions
Is the Polish Defense good for Black?
It is playable, but this position is not equal. The engine gives +1.05, which is a clear, lasting advantage for White. If you choose it, you should expect to defend carefully and know the main plans well.
What is White’s best move here?
The engine’s best move is e4. The listed continuation is e4 a6 a4 b4, which shows that White can challenge your queenside idea immediately by taking space in the centre and on the wing.
What do players usually choose against 1.d4 b5?
The most common reply is e4, and it is also the engine’s best move. Other popular choices are Bf4, Nf3, e3, c4, and Nc3, so you should be ready for normal developing moves as well as a central push.
Which White moves are marked as mistakes?
Bf4, e3, and c4 are all listed as inaccuracies in this position. The strongest practical lesson is that White should stay active and precise; if you are Black, knowing these less accurate choices can help you meet them with confidence.
How many games feature the Polish Defense?
Over 1 million Lichess games have reached the Polish Defense position. White wins 52.1%, Black wins 44.0%, with 3.9% draws — based on real rated games.