GMTonyKosten wrote on 10/16/13 at 11:29:00:

tony37 wrote on 10/16/13 at 10:30:02:

in Daniel's line: 14.d5 Rac8 15.Bd3 Nd7 16.Nf1 f5 17.b3, has only been played in correspondence games

Interesting, it occurred to me that 17 exf5 Nc5 was probably not very good because of the reply 18 b3!, keeping the knight stuck on a5, but I didn't consider 17 b3.

Ouch 17. b3! is just good as 17...Qc3 18. Rb1 Nc5 traps both the Queen and the a5 knight.

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Rac8 15. Bd3 Nd7 16. Nf1 f5 17. b3 Qc3 18. Rb1 Nc5 19. Bd2 Qxd3 20. Re3 Qxb1 21. Qxb1 +-

**Quote:** Daniel wrote on 10/15/13 at 15:49:46:

Sure. I became interested in this line after discovering 18...Rxf5!?, but it doesn't fully equalize ie:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Rac8 15. Bd3 Nd7 16. Nf1 f5 17. Ng3 f4 18. Nf5 Rxf5 19. exf5 Nf6 20. Bd2 Nc4 21. Rc1 Qd7 22. Bxc4 bxc4 23. b3 cxb3 24. Rxc8+ Qxc8 25. Qxb3 Bxd5 26. Qb1 Bf8 27. Ng5 *

I suppose 18...Rxf5 is playable OTB in a quick game, but it doesn't look like Black has a great deal for the exchange, objectively.

This whole line is starting to look like it's best saved for rapid and blitz games! If 16...f5 is bad, why am I even playing 13...Bb7 14. d4 Rac8 anyway?

**Quote:**

Wow! I think there is little chance of coming across white play like this OTB unless Ivanov comes out of 'retirement'!

Two questions: is 27...a5 playable? What about 28...Nxf2 29 Kxf2 g5 ?

For 28...Nxf2 white is still for preference after:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Rac8 15. Bd3 Nd7 16. Nf1 f5 17. Ng3 f4 18. Nf5 Bd8 19. Bd2 Nc4 20. Rc1 g6 21. Nh6+ Kg7 22. b3 Nc5 23. Bxc4 bxc4 24. Rxc4 Qb6 25. Ng4 Nd3 26. Rxc8 Bxc8 27. Re2 h5 28. Ne3 Nxf2 29. Kxf2 g5 30. Kf1 fxe3 31. Bxe3 Qb4 32. Kg1 Qxe4 33. Bxg5 Qg6 34. Bxd8 Rxd8 35. Kh2 *

After 27...a5, sacs on e5 are annoying:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Qc7 12. Nbd2 cxd4 13. cxd4 Bb7 14. d5 Rac8 15. Bd3 Nd7 16. Nf1 f5 17. Ng3 f4 18. Nf5 Bd8 19. Bd2 Nc4 20. Rc1 g6 21. Nh6+ Kg7 22. b3 Nc5 23. Bxc4 bxc4 24. Rxc4 Qb6 25. Ng4 Nd3 26. Rxc8 Bxc8 27. Re2 a5 28. Bc3 Ba6 29. Rd2 h5 30. Ngxe5 Nxe5 31. Nxe5 dxe5 32. Bxe5+ Bf6 33. Ba1