Chess Board
[ECO code A10]
ENGLISH OPENING
Anglo-Scandinavian Defence
Black developed his queen early, capturing White's newly doubled QP on Q4(d5).
White develops his Queen's Knight to QB3(c3) with a slight advantage, attacking Black's queen to gain a tempo by causing Black to lose a move with either (best) 3..Q-Q1(d8) or 3..Q-QR4, 4.P-Q4.
	White	Black
 1.	P-QB4	P-Q4?!
 2.	PxP	QxP?!
 3.	Kt-QB3
Example ends: Undo or Jump or Clear