Chess Board
[ECO code D55]
QUEEN'S GAMBIT - Neo-Orthodox Def.
The Petrosian Variation
White's KKt5(g5) bishop removed Black's knight on KB6(f6) to eliminate its control of White's K4(e4).
Black's K2(e7) Bishop completes the minor piece exchange (Kt-for-B) on KB3(f6) and targets Q5(d4).
    White   Black	White  Black
 1. P-Q4    P-Q4     6. Kt-B3  P-KR3
 2. P-QB4   P-K3     7.	BxKt   BxB
 3. Kt-QB3  Kt-KB3
 4. B-Kt5   B-K2
 5. P-K3    0-0
Example ends: Undo or Jump or Clear