[Event "Memphis Chess Classic"] [Site "Memphis, TN"] [Date "2007.10.13"] [Round "1"] [White "Zuo, Daniel"] [Black "Bick, John"] [Result "1/2-1/2"] [ECO "C42"] [WhiteElo "1543"] [BlackElo "2215"] [Annotator "Fritz 9 (30s)"] [PlyCount "111"] [EventDate "2007.??.??"] {C42: Petroff Defence: 3 Nxe5 and unusual White 3rd moves} 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Bd3 {last book move} Nd7 8. O-O {White castles and improves king safety} O-O 9. Qe2 {Black's piece can't move: c8} Nc5 10. Bc4 Bf6 11. Be3 Re8 12. Qd2 Ne4 {Black threatens to win material: Ne4xd2} 13. Qd5 {White pins: Qd5xf7} Qe7 14. Nd2 Ng5 (14... Nxd2 15. Qxd2 (15. Bxd2 $143 Be6 16. Qb5 a6 $17) 15... Qe4 16. Bd4 $11) 15. Bxg5 Bxg5 16. Rfe1 (16. Nf3 $142 $5 {should be considered} Be6 17. Qe4 $11) 16... Be6 $17 ({Inferior is} 16... Qxe1+ 17. Rxe1 Rxe1+ 18. Nf1 $16) 17. Qd3 Bxc4 (17... d5 18. Bb3 Red8 $15) 18. Qxc4 $11 Qxe1+ 19. Rxe1 Rxe1+ 20. Nf1 c6 21. g3 {Covers f4+h4} (21. Qg4 Bf6 22. Qb4 $17) 21... d5 22. Qb3 b5 23. Qb4 Be7 24. Qd4 (24. Qa5 Bc5 25. Qa6 Bb6 $19) 24... Bd6 (24... Re4 25. Qd1 $17) 25. Kg2 Re4 26. Qd3 Rae8 27. Nd2 Ra4 28. a3 {Prevents intrusion on b4} Bc5 29. Nb3 Bb6 30. Nd4 Bxd4 31. cxd4 Ra6 (31... h6 32. c3 $11) 32. Qf5 $11 Rb6 (32... Re6 $142 $11 { is the best option Black has}) 33. Qd7 $16 Reb8 (33... Ra8 34. Qc7 $16) 34. Qxa7 $18 g6 (34... R8b7 35. Qa5 $18) 35. Qc7 h5 36. Qd6 (36. c3 R8b7 37. Qe5 Kh7 $18) 36... R8b7 37. h3 Kg7 38. g4 hxg4 39. hxg4 g5 40. f4 gxf4 41. Qxf4 ( 41. c3 $5 Ra6 $18) 41... f6 42. Qd6 (42. c3 Rd7 $18) 42... b4 $16 43. axb4 Rxb4 44. Qxc6 Rxb2 45. Qxd5 (45. Kg3 $5 Rf7 46. Kf4 $16) 45... Rxc2+ $14 46. Kg3 Rbc7 47. Kf4 {White prepares the advance g5} Rf2+ 48. Kg3 {White threatens to win material: Kg3xf2} (48. Ke3 Rf1 $16) 48... Rd2 (48... Rfc2 $5 $11 {should not be overlooked}) 49. g5 $14 Rd3+ (49... Rc3+ 50. Kg4 Rf2 51. Qd7+ Kg6 52. Qe8+ Kg7 53. gxf6+ Rxf6 54. Qe7+ Kg6 55. Qe4+ Kg7 56. d5 $11) 50. Kg4 Rf7 51. gxf6+ (51. Kf4 $142 $5 $16) 51... Rxf6 $11 52. Qe5 Rdf3 53. Qg5+ Kf8 54. Qc5+ Kg7 55. Qg5+ Kf8 56. Qc5+ 1/2-1/2