[ECO code C01]
Black also develops his King's Knight, to attack White's QPawn. An alternative strategy is often 5..B-KKt4(g4) to pin White's knight and queen.
White Black 1. P-K4 P-K3 2. P-Q4 P-QB4 3. P-Q5 PxP 4. PxP P-Q3 5. Kt-KB3 Kt-KB3
Example ends: Undo or Jump or Clear