[ECO code A56]
The Petrosyan System (aka. Czech Benoni)
Black's King's Pawn advance to a central K4(e5) frees his KB to support his QBP. Russian Tigran Petrosyan won the World Chess Championship in 1963. Also called the Czech Benoni (after Karel Hromadka), leading to passive play. B-Alt.
White Black 1. P-Q4 Kt-KB3 2. P-QB4 P-B4 3. P-Q5 P-K4
WHITE to or Undo or Jump or Clear
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