exigentsky wrote on 10/25/07 at 22:30:06:
Thanks a lot for all that information! It was really helpful.
10. e3 did poorly in my database after e5 so I thought it wasn't the main move. Are you sure you don't mean 9. e3, so that d4 can be played in one move? After 9. e3, Black would again play e5 which is a key move throughout the variation. It takes advantage of White not having played d4. I can't see Black really being worse but again, it's all about variations. Regarding 4. Qb3, I'm not sure why c5 isn't doing so well statistically. It might just be the sample size, but Black wins 66% after a5 from 16 games at the 2525+ level. I guess part of the reason is that White can't play b4 as easily. Any ideas and variations? g4 is very interesting and sharp but after h6 I don't think black is objectively worse. He just has to absorb some initiative and that's not always easy. In any case, what do you play vs Nf3? I really envy Semi-Slav and KID players sometimes. It's so easy to meet c4 and Nf3.
No (or, yes), it's 10. e3. Adams indeed played 10...e5, after which 11. h3 Be6 12. Kh2 was supposedly += (eventually drawn, by the way).
ECO and NCO both like White (slightly) after 4. Qb3 a5, based on the course of Piket-Nikolic, Dutch championship 1998: 5. g3 b6 6. Bg2 Bb7 7. 0-0 0-0 8. d3 Na6 9. e4 Nc5 10. Qc2 Bxc3 11. Qxc3 d5 12. e5.
On 4. Qb3 c5, they both follow Kramnik-Illescas, Yerevan olympiad 1996: 5. g3 Nc6 6. Bg2 0-0 7. 0-0 Qe7 8. d3 h6 9. a3 Ba5 10. e3 Rd8 11. Qc2. Now ECO thinks 11...d5 is equal, while NCO just thinks it is "interesting."
Another branch is 5. a3 in the above line. After 5...Ba5 6. g3 Nc6 7. Bg2 0-0 8. 0-0 d5 9. d3, NCO thinks that both 9...h6 and 9...d4 lead to a slight advantage for White, while ECO thinks they both lead to equality. Ah, duelling opening books.
As to what I play, I could say "nothing," since I haven't played in a tournament in a while. I am/was generally a KID player, which does simplify things. Though I sometimes answered 1. Nf3 with 1...c5 or even occasionally 1...d5, as the spirit moved me.