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.
In the Slav, Black answers the Queen's Gambit with ...c6 instead of ...e6. The pawn on c6 supports d5, and the c8 bishop is not locked behind a pawn on e6, so it can step to f5 or g4 before ...e6 is played. This is the key difference between the Slav and the Orthodox Queen's Gambit Declined.
Black often captures on c4 and then defends the extra pawn with ...b5, or returns it for development. The resulting structure is healthy: no pawn is weak, and the center is flexible enough to hold with ...e6 or open with ...e5 or ...c5.
White's usual plans are to gain space with e4 or to press along the c-file. Many Slav positions revolve around the d4 pawn and the c-file tension, with pieces grouped around those points. One of White's most dangerous tries is a quick e4, which gains central space and, while Black still has a pawn on d5, puts it under pressure.
Typical mistakes include Black developing the bishop to f5 without checking Qb3, which hits b7 once the bishop has left c8, leaving the b-pawn or the c6 pawn weak, and White grabbing space without keeping the pieces coordinated. A practical tip for Black: develop the light bishop first, then play ...e6, and only then worry about the rest.
Also worth reading is 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.
It sits close to Minority attack. 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.
Opening ideas such as "Slav 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 pawn chain is a string of friendly pawns on a diagonal, each guarded by the pawn behind it, so only the rearmost pawn, the base, lacks pawn protection and becomes the usual target.
A good bishop is one whose own pawns mainly stand on the other color from the squares it travels on, so its diagonals stay open and it can reach the enemy camp.
A bad bishop is one whose own pawns stand mostly on its color, where they block its diagonals, leaving it with little range and few targets to attack.
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.
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.
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.