After 1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6
Why is the Rossolimo line impossible for white?
[fen ""]
1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6
In the Rossolimo proper,
[FEN ""]
[Title "Rossolimo variation"]
[Startply "5"]
1. e4 c5 2. Nf3 Nc6 3. Bb5 g6
white usually holds back pawn to d4
and doubles black pawns with Bxc6
, or later builds a center with an eventual c3
followed by d4
.
In the Open Sicilian,
[FEN ""]
[Title "Open Sicilian"]
[Startply "9"]
1. e4 c5 2. Nf3 g6 3. d4 cxd4 4. Nxd4 Nc6 5. Bb5?!
none of these plans are available, and 5. Bb5
doesn't make much sense. Besides, the bishop on b5
is tactically vulnerable to a later black Qa5+
or Qb6
.