Chess Board
[ECO code C61]
RUY LOPEZ
Bird Defence
White's light Bishop under QP attack on QB4(c4) moves to QKt3(b3) keeping pressure on the QP.
Black's King's Kt develops to K2(e7) doubling Q4P support and shielding the open K-file, with equality.
    White  Black	White  Black
 1. P-K4   P-K4	     6.	P-Q3   P-QB3
 2. Kt-KB3 Kt-QB3    7.	B-QB4  P-Q4
 3. B-Kt5  Kt-Q5     8.	PxP    PxP
 4. KtxKt  PxKt	     9.	B-Kt3  Kt-K2
 5. 0-0	   B-B4!
Example ends: Undo or Jump or Clear