2.Nc3? – allows 2...e5 transposing to Vienna but less critical. 8. Against Modern / Pirc – 2.d4 Bg7 3.Nc3 d6 4.Be3 1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 a6 (typical) 5.Qd2 b5 6.Bh6 Bxh6 7.Qxh6
4.Nf3 e6 5.Be2 Nd7 6.O-O Ne7 7.Nbd2
(Rubinstein): 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 opening repertoire for white