Chess Board
[ECO code D45]
SEMI-SLAV DEFENCE
The Exchange Variation
Black's QKt contested for control of his K4(e5).
White's QB4(c4) Pawn removes Black's QP on Q5(d4) to attack his QBP+KP, inviting an exchange to avoid the Meran (6.B-Q3..PxP) line. W-Alt.
    White  Black	White  Black
 1. P-Q4   P-Q4	     6.	PxP
 2. P-QB4  P-K3
 3. Kt-QB3 Kt-KB3
 4. Kt-B3  P-B3
 5. P-K3   QKt-Q2
Example ends: Undo or Jump or Clear