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