Scandinavian Defense
Move Sequence
e4— Classical king's-pawn play.d5— Immediate confrontation: Black challenges e4 directly — the oldest documented opening.exd5— Practically forced — anything else loses tempo or center.
The Scandinavian Defence begins with 1.e4 d5 and is the most direct challenge to the white central pawn. After 2.exd5 ♛xd5 3.♞c3 the black queen must retreat. The most typical retreat is 3...♛a5, but 3...♛d6 (the Modern Scandinavian) has grown greatly in popularity in recent decades. The defence was named after Scandinavian players of the 19th century who favoured it.
The continuation after 3...♛a5 typically runs 4.d4 ♞f6 5.♞f3 ♝f5 6.♝e2.
Strategy
Black accepts that the early queen development involves a loss of tempo (the queen must retreat after ♞c3 attacks it), but in return gets a clear and easy-to-understand position without complicated theory. The half-open d-file and the bishop on f5 or g4 give Black active piece play. The position carries less theoretical baggage than the Sicilian or the Ruy Lopez.
Typical Continuation
After 3...♛a5 4.d4 ♞f6 5.♞f3 ♝f5 6.♝e2 e6 7.O-O the typical position is reached. Black castles short and develops the dark-squared bishop to d6 or e7. The modern line 3...♛d6 avoids some of the tempo problems but is slightly less active. For beginners the Scandinavian is attractive because it can be played according to general principles without learning large amounts of theory.
Suitable for: Surprise weapon / beginner-friendly — for players who value clear structures and minimal theory.