aka. Scandinavian Defence

Board Position
A King's Pawn defence known since Lucena's book in 1497, but greatly analysed by Scandinavian players in the 19th century. It is rarely seen in tournament play however, being regarded as generally favourable to White. For this reason it is classed as an irregular (meaning uncommon) defence.
Black's challenging 1..P-Q4 reply to White's KP (move 1wb, shown left) aims to open up the centre (usually with the combined early development of Black's queen) preventing positional play, but should present no severe opening problems for the competent White player.
Variations include the Marshall Gambit (often leading to the Icelandic Gambit or a Caro-Kann transposition).
or Clear
or Groups
or see move: 1 e4 d5 2 exd5 to Lasker V: Qxd5 3 Nc3 Qa5 4 d4 Nf6 5 Nf3 Bg4 6 h3 Bxf3 7 Qxf3 c6 8 Bd2 Nbd7
to Marshall G: Nf6 3 d4 Nxd5 4 Nf3