Chess Board
[ECO code D20]
QUEEN'S GAMBIT ACCEPTED
Old Variation
White's KB1(f1) Rook moves to K1(e1) on the board's open file, targeting Black's bishop.
Black's QR4(a5) Knight returns to QB3(c6) attacking White's KP, with eqality.
    White  Black     6.	Kt-KB3 B-K2
 1. P-Q4   P-Q4	     7.	0-0    0-0
 2. P-QB4  PxP	     8.	P-KR3  Kt-B3
 3. P-K3   P-K4	     9.	Kt-B3  Kt-QR4
 4. BxP	   PxP	    10.	B-Q3   B-K3
 5. PxP    Kt-KB3   11.	R-K1   Kt-B3
Example ends: Undo or Jump or Clear