Chess Board
[ECO code A56] Move Move Here
MODERN BENONI - Petrosyan System
(to) Czech Variation

Black's queen's pawn out to Q3(d6) supported his QBP+QP and freed his QB.
White's KPawn advance to the centre frees his KB to support his QBP and blocks 5..P-K5. W-Alt.
	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

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