Key ideas
- The main systems are the Leningrad (...g6 and ...Bg7), the Stonewall (...d5, ...e6 and ...c6) and the Classical (...e6 and ...Be7).
- The Staunton Gambit (2.e4) is White's sharpest attempt to punish the early f-pawn move.
Plans for White
Exploit the weakened e8-h5 diagonal and the hole on e5 or e6, depending on Black's setup.
Plans for Black
Control e4, prepare ...e5 or kingside attacks with ...Qe8-h5.