[Event "USA-ch Seniors"]
[Site "Saint Louis"]
[Date "2021.07.19"]
[Round "4"]
[White "Sokolin, Leonid M"]
[Black "Christiansen, Larry Mark"]
[Result "0-1"]
[WhiteElo "2497"]
[BlackElo "2567"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. Bxc6 dxc6 7. d3 Qe7 8. a3 Nf6 9. b4 O-O 10. bxc5 Qxc5 11. a4 Re8 12. h3 h6 13. Ba3 Qa5 14. Nbd2 Be6 15. Qb1 Qc7 16. Qb4 Rad8 17. Reb1 b6 18. Nc4 c5 19. Qb5 Bd7 20. Qb3 Nh5 21. Bc1 Bc6 22. Be3 Kh7 23. a5 b5 24. Ncd2 Bf8 25. Re1 a6 26. Qc3 Bd7 27. Kh2 f5 28. Nb3 Rc8 29. Rad1 f4 30. Bc1 Bg7 31. g4 fxg3+ 32. fxg3 Be6 33. Be3 Rf8 34. Rf1 Nf4 35. Ng1 b4 36. Qb2 Qd6 37. Nxc5 Rxc5 38. Bxc5 Qxc5 39. gxf4 exf4 40. d4 Qxa5 41. e5 Bd5 42. Rb1 Qc7 43. Rbc1 Qc4 44. Rf2 a5 45. Ra1 Qb5 46. Ne2 Bc6 47. c4 Qxc4 48. Rxa5 f3 49. Ng3 Rf4 50. Rc5 Qe6 51. Rxc6 Qxc6 52. Qd2 Rh4 53. d5 Qc4 54. Rxf3 Qg4 55. Qe3 Qxh3+ 56. Kg1 Rc4 57. Ne2 Qg4+ 58. Rg3 Re4 59. Rxg4 Rxe3 60. Rxb4 Rxe2 61. e6 Re5 62. Rb5 g5 63. Rb8 Kg6 64. Rg8 Kh7 65. Rd8 Bf6 66. Rf8 Kg7 67. Rf7+ Kg6 68. Rd7 h5 69. Kg2 g4 70. Kg3 Kg5 0-1