Chess Board
[ECO code B96]
SICILIAN NAJDORF
Polugaevsky Variation
White's KBP on KB4(f4) exchanges, removing the newly doubled KP on K5(e5), and attacks the KKt.
Black develops his Queen to QB2(c7) to attack White's KP for 10.PxKt..Q-K4+ch, 11.B-K2..QxB.
    White  Black	White  Black
 1. P-K4   P-QB4     6.	B-Kt5  P-K3
 2. Kt-KB3 P-Q3	     7.	P-B4   P-Kt4
 3. P-Q4   PxP	     8.	P-K5   PxP
 4. KtxP   Kt-KB3    9.	PxP    Q-B2
 5. Kt-QB3 P-QR3
Example ends: Undo or Jump or Clear