The diagram shows the position after 2.Nc3 Nf6 3.g3, instead of 3.Nf3 in the previous discussion. The difference is that Black is not forced to respond to an attack on the e-Pawn.
- 3...Bb4 4.Bg2 O-O (4...Nc6) and now
- 5.Nf3 Re8 6.O-O e4.
- 5.e4, where White decides that preventing both ...d5 and ...e4 is more important than leaving the hole on d4. 5...Nc6 (or 5...Bxc3 6.bxc3 c6, but not 5...c6 6.Nge2 d5 7.cxd5 cxd5 8.exd5 Bf5 9.d4 when Black has trouble recovering the Pawn) 6.Nge2 Bc5.
- 5.d3 also stops ...e4. 5...Re8 6.Bd2 c6.
- 5.a3 just loses a tempo by forcing Black to play the intended 5...Bxc3.
- 3...d5 4.cxd5 Nxd5 5.Bg2 when White's extra tempo is starting to make the game difficult for Black, e.g. 5...Nb6 6.Nf3 Nc6 7.O-O Be7 8.a3.
- 3...c6 is an interesting idea that can be met by 4.Nf3 e4 5.Nd4 d5 6.cxd5 Qb6, 4.Bg2, or 4.d4 exd4 5.Qxd4 d5.
- 3...Nc6 4.Nf3 transposes to a line we covered previously.
- 3...d6 4.Bg2 g6 is looking more like a King's Indian Defense.
