MNb wrote on 06/10/11 at 20:14:53:
The great Sveshnikov did not prove that much, as Balashov did not play the critical 13...Qxg2 14.0-0-0 Bf5.
As far as I can see White is just a pawn down. See Krol-Socko, Nadole 1994.
I think the whole 5 e5 complex is basically equal, and so it should be - what has either side done wrong? However, from the white point of view I find it more congenial than the greedy 4 Ng5 and it has much more strategic content (e.g. blockade themes) than the primitive 4 d4 exd4 5 0-0 Nxe4 line. The successes of Dzindzi's young student Daniel Gurevich are perhaps evidence that 5 e5 might be a good choice for developing players, see for instance:
http://main.uschess.org/content/view/10809/608 Which brings me on to ...there is some useful coverage of 5 e5 in Dzindzi's notorious book Chess Openings for White Explained but, as many others have noted, the analysis and assessments in this book should be checked very carefully.
Some of the best analysis that I have seen of the precise line in question (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 Bxd4 9. Qxd4 O-O 10. Bxc6 bxc6 11. Nc3 Ng5) was here at Chess Publishing a few years ago by GM Olivier Renet, in connection with the game Estrin-Brglez.
Renet criticised 12 Bxg5 Qxg5, since neither 13 f4 Qxg2! nor 13 h4 (COFWE page 162) Qh5! achieves anything other than to create difficulties for White himself.
The Estrin game went 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Be3 Bxd4 9. Qxd4 O-O 10. Bxc6 bxc6 11. Nc3 Ng5 12. Qa4 Bd7 13. O-O-O Ne6 14.Qa3 and that is also the main line in COFWE., which claims an edge for White; Renet thought that with accurate play Black's counter-chances should be sufficient; its the old story of better structure vs activity. In other words, it's a game, and why should anyone complain about that? Remember Portisch's dictum: "Your only task in the opening is to reach a playable middlegame"; I would perhaps add "...that you understand and find congenial".
BTW Renet also gave some extensive home-analysis of the critical suggestion (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8.Be3 Bxd4 9. Qxd4 O-O 10. Bxc6 bxc6 11. Nc3 Ng5) 12. Qa4 Bd7 13. f4?! c5! (13...Ne6? 14 f5 c5 15 Qa3+=) 14. Qa5 d4.
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