Although some interesting replies here, I believe that none of them addresses the main part of Toloto`s initial posting which concerns the Chigorin with the interesting plan of Na3-c2 to push d2-d4. At the same time this hinders temporarily b7-b5.

This is the central position in question:

Here Black has tried both 10...a6, 10...Qd7, 10...f5(Barrev played this) and 10...d5

10...a6 spends a tempo on pushing b5, so I found 10....Qd7 interesting as it is a useful move and after 11.Nc2 black gets to push b5 "free of charge".

The game Ulibin-Ivanov followed this idea and the position looks ok for Black. But 14...d5 15.e5 and first now 15...Rb6 planning Ba6 is my suggestion as an improvement for Black.

[Event "RUS-ch 56th"]

[Site "Krasnoyarsk"]

[Date "2003.09.03"]

[Round "9"]

[White "Ulibin,Mikhail"]

[Black "Ivanov,Sergey"]

[Result "1-0"]

[Eco "C00"]

1.e4 e6 2.Qe2 c5 3.g3 Nc6 4.Bg2 g6 5.c3 Bg7 6.f4 Nge7 7.Nf3 d6 8.0-0 0-0 9.Kh1 Rb8 10.Na3 Qd7 11.Nc2 b5 12.d4 cxd4 13.cxd4 b4 14.Rd1 Rb6 15.d5 Ba6 16.Qe1 exd5 17.exd5 Na5 18.Nxb4 Bc4 19.Be3 Rb5 20.a4 Rbb8 21.Bd4 Bb3 22.Bxg7 Kxg7 23.Rd3 Rfe8 24.Na6 Nxd5

25.Qxa5 Rb6 26.Nd2 Ne3 27.Qc3+ 1-0

After writing this I discovered the following game with play similar to what I suggest above:

[Event "?"]

[Site "Elista ch-RUS KO"]

[Date "1997.??.??"]

[White "Morozevich,Alexander"]

[Black "Bareev,Evgeny"]

[Round "4.1"]

[Result "1/2-1/2"]

[ECO "C00"]

1. e4 e6 2. Qe2 c5 3. g3 Nc6 4. c3 g6 5. Bg2

Bg7 6. f4 Nge7 7. Nf3 d6 8. O-O O-O 9. Na3

Rb8 10. Kh1 Qd7 11. d4 cxd4 12. cxd4 d5 13. e5

b5 14. Be3 b4 15. Nb1 Rb6 16. Rc1 Ba6 17. Qe1

Na5 18. Nbd2 Rc8 19. Nb3 Nxb3 20. axb3 Rxc1 21. Bxc1

Bd3 22. Bd2 Qb7 23. g4 Be4 24. Ng5 Bxg2+ 25. Kxg2

Rc6 26. Nf3 Bf8 27. Qe2 Qb6 28. Be3 Qc7 29. Ne1

Nc8 30. Qf3 Qb7 31. Qf1 Qb6 32. Kh1 Ne7 33. Nd3

Rc7 34. Nc5 Nc6 35. f5 Bxc5 36. dxc5 Qb7 37. Bf4

Ne7 38. fxe6 fxe6 39. Bh6 d4+ 40. Kg1 Qc8 41. Qf3

g5 42. Rf1 Ng6 43. Qf6 d3 44. Bxg5 Qe8 45. Bd2

a5 46. h4 Rf7 47. Qg5 Rxf1+ 48. Kxf1 Qa8 49. Kf2

Qf8+ 50. Kg2 Qxc5 51. h5 Qd5+ 52. Kf2 Qd4+ 53. Kf3

Qd5+ 54. Kf2 Qd4+ 55. Qe3 Qxe3+ 56. Kxe3 Nxe5 57. g5

a4 58. bxa4 Nc4+ 59. Kxd3 Nxb2+ 60. Kc2 1/2-1/2