1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 - See Open Sicilian. 4...e5 - Lowenthal! Black immediately attacks the knight.
White's plans: Play Nb5 or Nf3. Target d6 and f7. Black's plans: Develop quickly with ...Nf6, ...Bc5. Accept structural weaknesses for activity.
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