Chess Board
[ECO code A40]
Franco-Indian Defence
ENGLISH DEFENCE - (The) Side Variation

White combined a light bishop deployment and pawn to KB3(f3) to double the defence of his KP.
Black is unwise to remove White's KP on K5(e4) here: 7.PxP..BxKt+ch, 8.PxB..BxP because of 9.Q-R5+ch!..P-KR3, 10.Q-K5 with the initiative. B-Alt.
    White  Black	White  Black
 1. P-Q4   P-K3	     5.	B-Q3   P-KB4
 2. P-QB4  P-QKt3    6.	P-B3   PxP?!
 3. P-K4   B-Kt2
 4. Kt-QB3 B-Kt5

Example ends: Undo or Jump or Clear