Markovich wrote on 06/02/07 at 17:22:08:
1. e4 e5 2. f4 exf4 3. Bc4 Nc6 4. d4 (if this is not the right move then the Bishop's Gambit is pointless) 4...Nf6 5. Nc3 Bb4 (5...Nxe4 6. Qe2 fine for White) 6. Ne2 Nxe4 7. 0-0 Bxc3 (7...Nxc3 8. bxc3 d5 9. bxb4 dxc4 10. Nxf4 Qxd4+ 11. Qxd4 Nxd4 12. Bb2) 8. Nxc3 Nxc3 (8...0-0 9. Nd5) 9. Qe1+ Ne7 and now I wonder if 10. Bxf7+!?, in the Romantic fashion, is any good. 10...Kxf7 11. Bxf4 and now 11...Nf5 appears to be necessary. Here 12. Qxc3 d6! 13. g4 looks quite lame to me, but White can try instead 12. Bxc7 Qg5 (equally after 12...Qf6) 13. Qxc3. In either case, Black's defense is not all that simple. I analyzed 12...Qg5 13. Qxc3 d5 14. Qb3 (14. Rae1, 14. Bf4) 14...Re8 15. Qxd5+ Be6 (15...Kg6 16. Rf2 is good for White) 16. Qxb7 Kg8 17. Bf4 Qd8 18. c3 Bd5 19. Qb5 and I think Black's knight and initiative are superior to White's three pawns.
Going back to where 10. Bxf7+ was played, White also had 10. Qxc3, but 10...d5 and I am not sure where to put the bishop, or whether White has full compensation for his pawn in any case. Best perhaps is 10. bxc3 d5 11. Bd3 0-0 12. Bxf4 Ng6 13. Bd2 or 13. Bg3 with perhaps almost sufficient compensation for his pawn.
Does 3...Nc6 refute the Bishop's Gambit?
Well, as I've said before when discussing Duras' 3...Nc6, it could be worthwhile if we had some high level tests of the critical lines. But so far almost no one goes there.
In your analysis above I'd still prefer 9.bxc3 over your 9.Qe1+ - unless the ending with 3 pawns for a minor can be shown to be good, as otherwise white has burned his bridges i.e. 10.bxc3 and the Q is malplaced on e1.
Anyway, 3-Nc6 can hardly be a refutation as it contains a bunch of forced draws if white wants to allow them. This is probably also why it's so rare in practice especially since black needs to know the Hanstein just in case. And even in GM practice 3.Nf3 g5 is not the most common defence anymore - especially since the Rosentreter seems to be gaining in popularity even among 2500 GMs.
Btw, the only
potentially important game since the FKG came out in Jan 2005, is imo Tiller-Kennaugh 4NCL 2007. (Unless there are some recent corr games with 3...Nc6 - if so please post them!)
Tiller,B (2371) - Kennaugh,C (2287) [C33]
4NCL 2006-07 Coventry ENG (5), 13.01.2007
1.e4 e5 2.f4 exf4 3.Bc4 Nc6 4.d4 Nf6 5.e5 d5 6.Bb5 Ne4 7.Bxf4 In the FKG I preferred 7.Nf3 with rough equality, as the text involves the customary exchange sac in the Duras, and since white's Bb5 can no longer occasionally catch the Q with Bxd5 I considered black -/+ or -+ already.
I've got the impression Björn Tiller is a strong well prepared player so has he found something after Qxh1 - or did he just forget about 7...Qh4+ ?
after
7...Qh4+ 8.g3 Nxg3 9.Bxg3 Qe4+ I've looked at little at 10.Kf2 Qxh1 / 10.Be2 Qxh1 11.Kf2 Qe4 12.Nf3 / 10.Qe2 Qxh1 11.Kf2 but all seem to run dry when Fritz gets going... - any ideas folks?