While Nunn's book inspired me, it also disillusioned me when it came down to opening study. Perhaps this was a good thing in as much as I worked harder on other parts of my game. However, it also meant that I never really deeply understood any opening systems, which is something that can take your game to another level. It is probably too late for me now to start working on opening systems with any ambition, though I was fired up by a Najdorf I played at my local club the other week. I was white and after playing 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 I took a think to work out what line I wanted to play. In the end I went back to the move I played 30 years ago, 6.Bg5, which leads to some of the craziest positions in the whole of chess.
1. Polugaevsky 6..e6 7.f4 b5 I used to play this for black!
2. Poisoned Pawn 6..e6 7.f4 Qb6
3. A line that wasn't popular when I last played the Najdorf, but seems to be doing well is 6..Nbd7 7.Bc4 Qb6
4. My opponent played the main line move, 6..e6 7.f4 Be7. Black breaks the pin on f6, and develops. Couldn't be simpler. Both sides improve their pieces with 8.Qf3 Qc7 9.O-O-O Nbd7