Kornev: Rossolimo and FriendsA Complete Repertoire vs. the Sicilian. ''Every chess player, who begins his games with the move 1. e2 e4, should be perfectly prepared to counter the move 1 c7 c5. Why is this opening so dangerous for White? The point is that in all the basic variations of the Sicilian Defence the fight is double edged and often White risks at least as much as Black does. White is practically deprived of the possibility to simplify the position by numerous exchanges.