Chess Board
[ECO code E79]
KING'S INDIAN DEFENCE
Four Pawns Attack - Exchange Variation
White's Q4(d4) knight under attack moves to QB2(c2), clearing the half-open Q-file.
Black's Queen's Bishop deploys to K3(e6). Tends to continue 10.0-0..Kt-QR4, P-QKt3..Q-B1 with equality.
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	B-K2   P-B4!
 2. P-QB4  P-KKt3    7.	Kt-B3  PxP
 3. Kt-QB3 B-Kt2     8.	KtxP   Kt-B3
 4. P-K4   P-Q3	     9.	Kt-B2  B-K3
 5. P-B4!? 0-0
Example ends: Undo or Jump or Clear