Chess Board
[ECO code C44]
The Old Variation

Black's KB to QB4(c5) delayed White's P-Q4 plan.
White advances his Queen's Knight's Pawn to QKt4(b4) to attack and dislodge the dark bishop. A now-obsolete variation (hence the name). W-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-QB3
 3.	P-B3	B-B4
 4.	P-QKt4

Example ends: Undo or Jump or Clear