Chess Board
[ECO code D35]
QUEEN'S GAMBIT - Exchange Var.
Side Variation
Black makes an inferior move, exchanging pawns on Q4(d5) using his king's-side Knight. B-Alt.
White advances his King's Pawn to the centre attacking Black's knight to force 5..KtxKt, 6.PxKt and gain a strong centre, by eg. 6..P-QB4, 7.R-Kt1!.
    White  Black	White  Black
 1. P-Q4   P-Q4	     5.	P-K4!
 2. P-QB4  P-K3
 3. Kt-QB3 Kt-KB3
 4. PxP	   KtxP
Example ends: Undo or Jump or Clear