Chess Board
[ECO code C61]
RUY LOPEZ - Bird Defence
Side Variation
White's KB3(f3) knight took the en prise KP on K5(e5) to enable 6.KtxBP or 6.Q-KB3, but a poor move.
Black develops his Queen to fork White's knight and KKtP (threatening White's rook), with a position of strong advantage similar to the Shilling Gambit.
    White  Black	White  Black
 1. P-K4   P-K4	     5.	KtxP?  Q-Kt4
 2. Kt-KB3 Kt-QB3
 3. B-Kt5  Kt-Q5
 4. B-B4   B-B4
Example ends: Undo or Jump or Clear