Chess Board
[ECO code A10]
ANGLO-POLISH-DUTCH OPENING
Black advanced his KP to the still vacant centre, freeing his king's bishop to threaten White's QKtP.
White develops his Queen's Bishop to QKt2(b2) to threaten Black's king's pawn, inviting a pawn exchange where 3..BxP, 4.BxP can be advantageous to White.
	White	Black
 1.	P-QB4	P-KB4
 2.	P-QKt4	P-K4
 3.	B-Kt2
Example ends: Undo or Jump or Clear