If 18. h3, c5. Then if 19. hxg4, cxd4; and if 20. cxd4, Nxg4 with Qg6 and Qh5+ to follow. Where can the N go? If 19. Nb5 (say), Bf5 hammering d3, and Qg6 (piling on d3) & Qh5 (attacking the weak k) is still a threat. White's developement isn't cooperating and his k-side is almost stripped of defenders. It only takes black 2 to 3 moves to implement some strong ideas; it takes white a few moves longer to do the same. But black must approach this position with some energy, or white will have an excellent game in a couple of moves. But I feel that the push c5 soon followed by Qg6 and/or Bf5 give black the advantage here.
19...c5 20.d4 looks horrible for Black, since he can't play 20...Nc6, as suggested, because of 21.Nxh6+ and the white queen guards h7.
pfren, do you mean the diagram in post 44?
Yup. But anyway, the whole variation hardly proves anything regarding the value of the opening.
pfren, I agree with both your statements. It's just a random five minute game. But thanks for the input; I missed Nh6+, but I didn't want the N to get to f5 in the first place.
Yeah, that's a lot of analyzing over a 5/0 game I played with no idea what I was doing. The final position was unclear to me. Thanks for all the ideas.