I have started studying Panjwani's excellent book
The Hyper Accelerated Dragon, and came upon an interesting disagreement.
His main recommendation against
2.Nf3 g6 3.c3 is quite original, but he wants to allow
3...Nc6 4.d4 d5 5.e5 cxd4 6.cxd4 Bg4. But while this is a minor line in his coverage, spanning less than a page, the alternative and much more common move order
3...Bg7 4.d4 cxd4 5.cxd4 d5 6.e5 Bg4 would be likely to reach the same positions, and arguably White wouldn't have much choice there since 6.exd5 is harmless. So why does Panjwani allow all his other lines instead of going straight for this?
One point could be that in the normal mover order with ...Bg7 in instead of ...Nc6, 7.Bb5+ is annoying: If 7...Nc6 8.Bxc6+ White can try to play against the backward c-pawn, though 7...Nd7 instead still seems to score well for Black. Panjwani's move order with 3...Nc6 allows him to meet 7.Bb5 with 7...Qb6 and recapture on c6 with the queen.
Andrew Greet in
Starting Out: Accelerated Dragon, however, crosses paths with Panjwani when he mentions
3.c3 d5 4.e5!? Nc6 5.d4 Bg4 and comments:
Quote:Unfortunately for White, the presence of both sides' c-pawns on the board gives him some extra problems, the main one being that his queen's knight can no longer be developed on its optimal square. A secondary point is that Black may be able to develop his king's bishop other than on g7 [...]
Greet's logic seems spot on to me here, so I'm not sure why Panjwani is so quick to exchange on d4, allowing White to return to something normal. Delaying ...cxd4 limits White's options, since he hardly wants to play dxc5 and weaken the e5 pawn.