Chess Board
[ECO code A40]
ENGLISH DEFENCE
The Hartlaub Gambit Declined
Black's pawn to KB4(f5) doubled the attack against White's KP. As in Eric Schiller's Caxton Named Opening List, but inferior to a 4..B-QKt5 pin.
White declines 5.PxP and moves his Q4(d4) Pawn on to Q5(d5) counter-attacking Black's KP. W-Alt.
    White  Black	White  Black
 1. P-Q4   P-K3	     5.	P-Q5
 2. P-QB4  P-QKt3
 3. P-K4   B-Kt2
 4. Kt-QB3 P-KB4
Example ends: Undo or Jump or Clear