7 ... Nd7? Black has blocked in his queen bishop. Why not Bd7? Is he really so worried about his QB pawn? I guess now that he's set up his K-side fianchetto he doesn't want to rely on his king bishop to protect his QB pawn.

8 ... h6 was a question at first. Now I see that after 9. h5, this move allows 9... g5.

11. c4? e5? What's going on here? White increases the scope of Black's K bishop and invites Nb6. Black immediately blocks his own bishop and puts a big hole at d5.

I suppose with 29. ...Nxc4, Black gets three pawns for his knight, but to do so he has to allow the exchange of the rooks which at that point seems nice for White.

36. Kd2? What's White afraid of?

If 7...Bd7 White can play 8 Qb3. This hits both b7 and f7. E.g. 8...Bc6 9 Ne5. If 8...Qc2 White might continue 9 Bg2 or d3 developing and with some threats against the Q-side or the idea of Ng5-e4.

11..e5 supports Black's plan of developing a K-side attack with f5-f4. c4 allows d3 to follow and prevents a future ...c4. Since most of Black's play is on the king's side, White need not be too worried about the long black diagonal.

At the end, I am somewhat surprised Szabo resigned even after adjournment analysis. The best I see for White is 41...Bh6 42 Qf3 Bxe3 43 Qxe3 Qg4+ 44 Kd3 Qxh4 45 Qxc5. Now White will win if he can keep the queens on and restrain the king-side pawns. Winning after the Q exchange may also be possible if white enters that endgame under the right circumstances, but he would need to be very careful