Scandinavian Defense: Main Line

About this variation

After 2...Qxd5 3. Nc3, the queen retreats to a5. It is the classical way to play the Scandinavian.

The main line of the Scandinavian is 1. e4 d5 2. exd5 Qxd5 3. Nc3 Qa5. Black recaptures with the queen and accepts losing a tempo when it is attacked by the knight, then retreats it to a5, where it will pin the knight on c3 once White plays d4, and stays active. Black usually continues with ...Nf6, ...c6, ...Bf5 or ...Bg4, and ...e6, a set-up similar to the Caro-Kann.

White's main plan is to use the extra development: d4, Nf3, Bc4 or Bd2, and often a quick attack before Black castles. A typical idea is Bd2 to unpin the knight and prepare Nd5 tricks against the queen, or Ne5 with pressure on f7. White can also castle long and push the kingside pawns. Black's position is solid but slightly passive, and the queen can become a target if Black is careless.

Black's strength is a sound structure with no weaknesses and a well-placed light-squared bishop outside the pawn chain. If Black completes development and castles safely, the endgame prospects are good, and the half-open d-file can give pressure against White's d4 pawn. Many players also use ...Qd6 or ...Qd8 instead of ...Qa5, which lead to related but different positions.

The main line suits Black players who want a simple, reliable reply to 1. e4 with less theory than the Sicilian or Ruy Lopez. It has been used by strong grandmasters, including in world championship play.

Common mistakes for Black include leaving the queen on a5 open to a discovered attack when the c3 knight jumps to d5 or b5 with a bishop on d2, and developing the light-squared bishop too early so that it can be trapped or exchanged on bad terms. White sometimes errs by pushing pawns to chase the queen without completing development. Calm piece play is the best approach for both sides.

It is one of the main lines of the Scandinavian Defense.