Board Position
Named after White's 2.P-QB4 gambit on the queen's side of the board in move 2 of an otherwise (and less frequent) Queen's Pawn game. It is perhaps the most popular of the various QP openings, being (like the King's Gambit) a starting point for several other opening systems.
White's aim is eventually to create a pawn centre at Q4 and K4, coupled with pressure on the Q-side using the QB-file. Black must either accept the gambit, resort to a speculative counter-gambit, or protect his QP with a pawn - if he makes an immediate developing move White gains an advantage. In most lines Black declines the pawn (although the Gambit Accepted (qv.) by 2..PxP is not unpopular), whereupon White seeks a Q-side minority attack.
Immediate declined defences include the "Orthodox" (2..P-K3, below), the Slav (qv.) (2..P-QB3) and Irregular Defences (so called as less frequent) - Marshall (2..Kt-KB3), Symmetrical (2..P-QB4), Albin Counter (2..P-K4) and Chigorin (qv.) (2..Kt-QB3). Later variations include the Tarrasch Def. (qv.)
or Clear
or Groups
or see: 1 d4 d5 2 c4 to: e6 3 Nc3 Nf6 4 Bg5 Be7 5 e3 0-0 6 Nf3 to | Orthodox 6..Nbd7 (qv.)
| Lasker's D: 6..Ne4 (qv.)