Chess Board Animation
Animation
RUY LOPEZ - Exchange Var.
Side Variation (Animated)

When White's 4.BxKt!? removes Black's KP support so as to take the centre by 5.KtxKP?, Black's reply 5..Q-Q5! forks White's Kt and KP, regaining his lost pawn with an advantage in position that (best) continues 6.Kt-B3..QxKP+ch, 7.Q-K2..QxQ+, 8.KxQ.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	Kt-QB3
 3.	B-Kt5	P-QR3
 4.	BxKt!?	QPxB	nb: ?=bad move
 5.	KtxP?	Q-Q5!	    !=good move

Example ends: Undo or Jump or Clear