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You play White · play the main line move for move.
The Polish (also called the Sokolsky or the Orangutan) starts 1.b4: queenside space before any care for the centre. Let's be straight about it: engines and masters agree that Black equalizes comfortably with natural moves, and 1.b4 has never broken into serious top-level play. But it is not refuted, it has one genuine idea (trading the flank b-pawn for Black's central e-pawn), and as a surprise weapon it puts opponents on their own resources from move one.
The idea in one line
Grab queenside space with 1.b4, put the bishop on b2, and trade your flank pawn for Black's central e-pawn in the main line: a playable, offbeat system whose real edge is unfamiliarity.
Key ideas
The main-line trade is the whole argument for 1.b4: after ...e5, Bb2 and ...Bxb4, White plays Bxe5 and has swapped a flank pawn for a central pawn. On paper, a good deal.
After the trade White clamps d5 with c4, reseats the bishop on b2, and plays sober chess: the half-open b-file and the long diagonal are the assets.
Honesty first: engines rate the resulting positions roughly equal, often a shade more comfortable for Black. Nobody plays 1.b4 for an objective edge; you play it to reach positions you know and your opponent doesn't.
The reply to respect is 1...e5, meeting the flank lunge with the centre: Black develops fast, castles first, and stands at least equal in this main line.
Plans for each side
White: Trade the b-pawn for the e5-pawn, retreat the bishop to b2 where it always belonged, clamp d5 with c4, then develop with Nf3, e3 and Be2, castle, and look for the d4 break or pressure down the half-open b-file.
Black: Answer with 1...e5, accept the trade with ...Bxb4, develop rapidly with ...Nf6 and ...Nc6, castle first, and use the lead in development: a timely ...d5 break against White's slower setup gives Black comfortable equality, often more.
Common mistakes to avoid
As White, don't believe your own propaganda: after the trade it is a normal, roughly equal game; press for an edge that isn't there and the loose queenside pawns become targets.
As Black, don't meet 1.b4 passively: left alone, the pawn reaches b5 where it genuinely annoys the queenside knight. The centre-first answer 1...e5 is both the strongest and the simplest.
The b2-bishop never stops watching g7: as Black, stay alert to tactics on the long diagonal after castling, especially if White ever opens the centre with d4 and e5.
The main line, explained
1. b4b4 on move one: space on the wing, a home for the bishop on b2, and zero central presence. Engines are unimpressed; opponents are often unprepared.
1… e5...e5! is the strongest reply: Black answers the flank with the centre.
2… Bxb4...Bxb4 accepts the trade: Black gives the e-pawn back next move but comes out with faster development.
3. Bxe5Bxe5 restores material equality. White's whole point: a flank pawn has been swapped for a central one.
4… Nc6...Nc6 develops with tempo by hitting the e5-bishop.
5. Bb2Bb2 retreats to the square it always wanted: the long diagonal, eyeing g7.
5… O-O...O-O and Black castles first, standing comfortably: development was the price White paid for the structural trade.
Frequently asked
Is the Polish Opening any good?
It is playable but objectively harmless: engines give Black comfortable equality, or a shade more, after the natural 1...e5. Its genuine assets are surprise value, one clear structural idea, and positions the 1.b4 player knows far better than the opponent.
Why is it called the Orangutan?
Tartakower played 1.b4 at New York 1924 after a visit to the zoo, claiming the orangutan Susan had endorsed the move. The name stuck, alongside Polish and Sokolsky (after Alexey Sokolsky, its most devoted analyst).
What should Black play against 1.b4?
1...e5. After 2.Bb2 play 2...Bxb4: the point is that 3.Bxe5 is met by 3...Nf6, blocking the long diagonal and finishing development first. Solid setups with ...d5 also work, but the centre-first approach asks 1.b4 the hardest questions.
BetterChess is a practice tool — we make no guarantee you'll reach 1800 or any rating. The lines here are standard, well-established opening theory, and every move is checked legal with the same engine the board runs.