Chess Board
[ECO code A56]
MODERN BENONI - Petrosyan System
The Czech Variation

White's KPawn advance to the centre freed his KB to support his QBP and blocked 5..P-K5.
Black develops his King's Bishop to K2(e7) to discourage a 6.B-KKt5 pin against his KKt.
	White	Black
 1.	P-Q4	Kt-KB3
 2.	P-QB4	P-B4
 3.	P-Q5	P-K4
 4.	Kt-QB3	P-Q3
 5.	P-K4	B-K2

Example ends: Undo or Jump or Clear