Chess Board
[ECO code D02]
QUEEN'S PAWN GAME
(to) Catalan Opening, London Variation
White advances a Queen's Bishop's Pawn gambit to QB4(c4) challenging Black's QP.
Black completes a London System, setting his own QBPawn on QB3(c6) to strengthen his QP, and keeps relatively easy equality.
    White  Black	White  Black
 1. P-Q4   P-Q4	     5.	0-0    QKt-Q2
 2. Kt-KB3 Kt-KB3    6.	P-B4   P-B3
 3. P-KKt3 B-B4
 4. B-Kt2  P-K3
Example ends: Undo or Jump or Clear