Chess Board
[ECO code A57]
BENKO GAMBIT
Benko Gambit Half Accepted
White's Q-side Knight on QR3(a3) moves on to QB4(c4) attacking Black's queen on QR5(a5).
Black's Queen best returns to Q1(d8), for equality. [..Q-B2, 10.P-QR3..PxP, 11.RxP..RxR can favour White].
    White  Black	White  Black
 1. P-Q4   Kt-KB3    6.	P-K4   Q-R4 ch
 2. P-QB4  P-B4	     7.	B-Q2   P-Kt5
 3. P-Q5   P-QKt4    8.	Kt-QR3 P-Q3
 4. PxP    P-QR3     9.	Kt-B4  Q-Q1!?
 5. P-B4   PxP
Example ends: Undo or Jump or Clear