[Event "It "] [Site "Philadelphia (USA)"] [Round "3"] [White "Solon Nathan (USA)"] [Black "Chak Mark"] [Result "1-0"] [WhiteElo "2317"] [BlackElo "0"] [ECO "D31"] [Opening "QGD: 3.Nc3"] 1. d4 d5 2. c4 e6 3. Nc3 f5 4. Nf3 Nf6 5. g3 Be7 6. Bg2 c6 7. O-O O-O 8. b3 Nbd7 9. Bb2 Ne4 10. Ne5 Nxe5 11. dxe5 Nxc3 12. Bxc3 dxc4 13. bxc4 Qxd1 14. Rfxd1 Rb8 15. a4 f4 16. a5 fxg3 17. hxg3 c5 18. f4 Rd8 19. Rdb1 Rf8 20. Rb2 Bd8 21. Be4 g6 22. Kg2 Rf7 23. e3 b6 24. Kf3 Bb7 25. Bxb7 Rbxb7 26. Rd1 Rbd7 27. Rbd2 Rxd2 28. Rxd2 Bc7 29. a6 Kf8 30. g4 Ke8 31. Rh2 Kd7 32. Rb2 Kc6 33. e4 Rd7 34. Ke2 Rf7 35. Ke3 h5 36. gxh5 gxh5 37. Rh2 Rh7 38. f5 b5 39. cxb5+ Kxb5 40. Kf4 h4 41. f6 Bb6 42. Kg5 c4 43. Kg6 Rh8 44. Kg7 Rc8 45. Rxh4 Bc5 46. Rh8 Rxh8 47. Kxh8 Kxa6 48. Kg7 Kb5 49. f7 Ka4 50. Bd4 Bxd4 51. f8=Q Bxe5+ 52. Kf7 a5 53. Kxe6 Bb2 54. Qb8 c3 55. Kd5 Ka3 56. Kc4 Ka2 57. Qb3+ Kb1 58. Qd1+ Ka2 59. e5 a4 60. e6 a3 {#r} 1-0