Carlsbad structure
The pawn setup from the Queen's Gambit Declined Exchange Variation, with White pawns on d4 and e3 against Black pawns on c6 and d5, where White often launches a queenside minority attack with b4 and b5.
After the exchange on d5, White keeps pawns on a2, b2, d4 and e3, while Black has a7, b7, c6 and d5: White's c-pawn has been traded for Black's e-pawn. White gets a half-open c-file and Black a half-open e-file. The natural knight posts are e5 for White and e4 for Black.
White's best-known plan is the minority attack: two queenside pawns advance against three. After Rb1 and b4-b5, White aims to trade on c6 or force ...c5, leaving a backward pawn on c6 or an isolated pawn on d5 to attack. Pieces help with Qc2, a rook on b1 or c1, and the bishop on d3 aimed at the kingside. Another plan is Nge2, f3 and e4, using the extra central pawn to grab space.
Black should not sit and wait. Typical counterplay is a kingside push with ...Ne4, ...f5 and a rook on the f-file, or the central break ...e5 when it can be supported. Black can also meet b5 with ...cxb5, getting a safe queenside file and trading the weak pawn for activity.
Common errors include White pushing b5 before the pieces are in place, which lets Black close the queenside, and Black passively allowing the attack without any counterplay. A useful tip: count how fast each side can bring a rook and a knight into action before choosing a plan.
A neighboring idea is Queenside majority structure. A pawn structure where one side has more pawns on the queenside than the opponent, such as three against two, and can create a passed pawn there while the other side holds a kingside majority.
Also worth reading is Slav structure. The solid Black setup with pawns on c6 and d5 that supports the center while keeping the c8 bishop free to develop outside the pawn chain, usually on f5 or g4.
Opening ideas such as "Carlsbad structure" are easier to keep when they are tested on your own games, which is what a first lesson with George Li begins with.
Related terms
A minority attack is a plan in which two or three pawns advance against a bigger enemy pawn group on the same wing, aiming to leave a lasting weakness behind rather than to make a passed pawn.
A pawn lever is a pawn that stands in direct contact with an enemy pawn, attacking it so that a capture or exchange is possible and the structure can be opened or damaged.
A weak pawn is a pawn that is hard to defend with other pawns and so must be protected by pieces, making it a long-term target for the opponent.
A backward pawn is a pawn that has fallen behind the pawns on neighboring files and cannot safely advance, because the square in front of it is controlled by an enemy pawn.
A central break is a pawn advance or exchange in the middle of the board, usually on the c, d, e or f files, that challenges the opponent's central pawns and opens lines for pieces.
A pawn structure where one side has more pawns on the queenside than the opponent, such as three against two, and can create a passed pawn there while the other side holds a kingside majority.
Openings where it occurs
Guides that go further
Most popular chess openings and win rates
The most played openings, how often White wins, and how the numbers change with rating, computed from public games.
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
A game review, a read on your level and a written study plan from George Li.
Want to spot this in your own games?
A first lesson starts with your games: George reviews them and builds a study plan around what he finds.