Chess Board
[ECO code D08]
QGD: ALBIN COUNTER-GAMBIT
Lasker Trap
White's double-pinned Q2(d2) bishop under KP attack removed Black's B on Kt5(b4) - a bad idea!
Black's pawn removes White's KB2(f2) pawn with check, for 7.KxP..QxQ advantage (or if 7.K-K2 then a key under-promotion 7..PxKt=Kt+ch wins as 8.RxKt..B-KKt5+ch skewers White's queen).
    White  Black	White  Black
 1. P-Q4   P-Q4	     5.	B-Q2   PxP!
 2. P-QB4  P-K4	     6.	BxB??  PxP ch!
 3. QPxP   P-Q5
 4. P-K3?! B-Kt5 ch
Example ends: Undo or Jump or Clear