Chess Board
[ECO code C41]
PHILIDOR DEF. - Jaenisch Counter-Attack
(avoiding Locock Gambit)
White moved his king's-side knight to KKt5(g5), planning a 4..P-KR3,5.KtxBP gambit.
Black develops (best) his King's Bishop to K2(e7), freeing his KB1(g8) to avoid the promising White attack that follows the Locock Gambit. B-Alt.
	White	Black
 1.	P-K4	P-K4
 2.	Kt-KB3	P-Q3
 3.	P-Q4	Kt-KB3
 4.	Kt-Kt5	B-K2
Example ends: Undo or Jump or Clear