Chess Board
[ECO code C33]
(KGA:) BISHOP'S GAMBIT - Lopez Def.
McDonnell Attack - Fraser Variation
White developed his queen to KB3(f3), planning 8.QxBP+ch or 8.PxP (his Q defending KR).
Black develops his King's Knight to KB3(f6) to defend (by shielding) his KBP, and can now castle.
    White  Black	White  Black
 1. P-K4   P-K4	     5.	Kt-QB3 B-Kt2
 2. P-KB4  PxP	     6.	P-KKt3 PxP
 3. B-B4   Q-R5 ch   7.	Q-B3  Kt-KB3
 4. K-B1   P-KKt4
Example ends: Undo or Jump or Clear