[Event "National Open 2021"]
[Site "Las Vegas USA"]
[Date "2021.06.18"]
[EventDate "?"]
[Round "4.7"]
[Result "0-1"]
[White "Aleksandr A Ostrovskiy"]
[Black "Hans Moke Niemann"]
[ECO "A13"]
[WhiteElo "2422"]
[BlackElo "2567"]
[PlyCount "96"]

1. c4 e6 2. Nc3 d5 3. e3 a6 4. Nf3 Nf6 5. b3 b6 6. Bb2 Bb7 7. Rc1 Nbd7 8. cxd5 exd5 9. Ne2 g6 10. g3 Bd6 11. Bg2 O-O 12. O-O Qe7 13. Rc2 Rfe8 14. Qa1 Rad8 15. Rfc1 c5 16. d4 Ne4 17. Nf4 c4 18. bxc4 dxc4 19. Ne5 b5 20. Nxd7 Rxd7 21. d5 Be5 22. Bxe5 Qxe5 23. Qxe5 Rxe5 24. f3 Nc5 25. e4 f5 26. Rb1 Kf8 27. a4 Nxa4 28. Ne6+ Ke7 29. f4 Rxe4 30. Bxe4 fxe4 31. Ng5 Bxd5 32. Nxh7 c3 33. Ng5 Bc4 34. Re1 Bd3 35. Rcc1 Rd4 36. Nf3 Rd5 37. Ne5 Rxe5 38. fxe5 b4 39. Ra1 Nb6 40. Kf2 b3 41. Ra3 Bc4 42. Ke3 a5 43. Rxa5 b2 44. Ra7+ Ke8 45. Kxe4 c2 46. Raa1 Ba2 47. Kf4 bxa1=Q 48. Rxa1 Bb1 0-1