Chess Board
[ECO code B90]
SICILIAN NAJDORF
Byrne Variation
White's KKtP began a P-Kt5 attack on Black's KKt.
Black usually moves his KPawn on to K4(e5) and loses a tempo, but counter-attacks White's knight and frees his QB to attack White's KKtP. B-Alt.
    White  Black	White  Black
 1. P-K4   P-QB4     6.	B-K3   P-K3
 2. Kt-KB3 P-Q3	     7.	P-KKt4 P-K4
 3. P-Q4   PxP
 4. KtxP   Kt-KB3
 5. Kt-QB3 P-QR3
Example ends: Undo or Jump or Clear